Flanges and their joints - Design rules for gasketed circular flange connections - Part 2: Gasket parameters

This document details generic gasket parameters for use in EN 1591-1 during preliminary calculations during which the type of gasket to be used in an application is to be decided. Once the gasket type has been decided the parameters for gaskets of that type from the different potential commercial suppliers should be used in further calculations as within a gasket type there will be differences depending upon the supplier.
WARNING - For the final calculations using the method given in EN 1591-1 the reader is directed to obtain gasket parameters for the selected generic type of gasket from the intended gasket manufacturer. This is because the data for a generic gasket type will vary between manufacturers. This variation can be seen in the tables of data which are embodied in this document.

Flansche und ihre Verbindungen - Regeln für die Auslegung von Flanschverbindungen mit runden Flanschen und Dichtung - Teil 2: Dichtungskennwerte

Brides et leurs assemblages - Règles de calcul des assemblages à brides circulaires avec joint - Partie 2 : Paramètres de joint

Le présent document spécifie des paramètres génériques de joints utilisables dans l’EN 1591 1 pendant les calculs préliminaires durant lesquels le type de joint à utiliser dans une application doit être choisi. Dès que le choix d’un type de joint a été décidé, il convient que les paramètres de ce type de joint obtenus auprès de différents fournisseurs commerciaux soient utilisés dans d’autres calculs puisque, pour un type de joint donné, des différences apparaitront en fonction du fournisseur de joints.
AVERTISSEMENT — Lors des calculs finaux réalisés conformément à la méthode de calcul donnée dans l’EN 1591 1, il est conseillé au lecteur d’obtenir des paramètres de joint pour le type de joint générique choisi auprès du fabricant de joints concerné, car les données pour un type de joint générique peuvent varier en fonction des fabricants. Cette variation peut être observée dans les tableaux de données spécifiés dans le corps du présent document.

Prirobnice in prirobnični spoji - Pravila za konstruiranje prirobičnih spojev, sestavljenih iz okroglih prirobnic in tesnil - 2. del: Parametri tesnil

General Information

Status
Published
Publication Date
03-Mar-2020
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
04-Mar-2020
Completion Date
04-Mar-2020

RELATIONS

Buy Standard

Technical report
-TP CEN/TR 1591-2:2020
English language
39 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day
Technical report
-TP FprCEN/TR 1591-2:2019
English language
40 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

SLOVENSKI STANDARD
SIST-TP CEN/TR 1591-2:2020
01-junij-2020
Nadomešča:
SIST EN 1591-2:2008
Prirobnice in prirobnični spoji - Pravila za konstruiranje prirobičnih spojev,
sestavljenih iz okroglih prirobnic in tesnil - 2. del: Parametri tesnil

Flanges and their joints - Design rules for gasketed circular flange connections - Part 2:

Gasket parameters

Flansche und ihre Verbindungen - Regeln für die Auslegung von Flanschverbindungen

mit runden Flanschen und Dichtung - Teil 2: Dichtungskennwerte

Brides et leurs assemblages - Règles de calcul des assemblages à brides circulaires

avec joint - Partie 2 : Paramètres de joint
Ta slovenski standard je istoveten z: CEN/TR 1591-2:2020
ICS:
23.040.60 Prirobnice, oglavki in spojni Flanges, couplings and joints
elementi
SIST-TP CEN/TR 1591-2:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST-TP CEN/TR 1591-2:2020
---------------------- Page: 2 ----------------------
SIST-TP CEN/TR 1591-2:2020
CEN/TR 1591-2
TECHNICAL REPORT
RAPPORT TECHNIQUE
March 2020
TECHNISCHER BERICHT
ICS 23.040.60 Supersedes EN 1591-2:2008
English Version
Flanges and their joints - Design rules for gasketed circular
flange connections - Part 2: Gasket parameters

Brides et leurs assemblages - Règles de calcul des Flansche und ihre Verbindungen - Regeln für die

assemblages à brides circulaires avec joint - Partie 2 : Auslegung von Flanschverbindungen mit runden

Paramètres de joint Flanschen und Dichtung - Teil 2: Dichtungskennwerte

This Technical Report was approved by CEN on 10 February 2020. It has been drawn up by the Technical Committee CEN/TC 74.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 1591-2:2020 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST-TP CEN/TR 1591-2:2020
CEN/TR 1591-2:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

1 Scope .................................................................................................................................................................... 4

2 Normative references .................................................................................................................................... 4

3 Terms and definitions ................................................................................................................................... 4

4 Typical gasket parameters for various gasket styles ......................................................................... 4

4.1 General ................................................................................................................................................................ 4

4.2 Q , Q ..................................................................................................................................................... 5

min[L] Smin[L]

4.3 Qsmax, PQR and ΔeGc ......................................................................................................................................... 21

4.4 E and e ........................................................................................................................................................... 25

G G

Annex A (informative) Relation between the gasket types and the codes used in the tables ....... 35

Annex B (informative) Public sources of reliable data ................................................................................ 38

Bibliography ................................................................................................................................................................. 39

---------------------- Page: 4 ----------------------
SIST-TP CEN/TR 1591-2:2020
CEN/TR 1591-2:2020 (E)
European foreword

This document (CEN/TR 1591-2:2020) has been prepared by Technical Committee CEN/TC 74 “Flanges

and their joints”, the secretariat of which is held by DIN.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 1591-2:2008.
The major changes in comparison with EN 1591-2:2008 include:
• The introduction of the creep parameter Δe ;

• The introduction of the compressed gasket thickness measured during compression phase e ;

• The removal of E and e results tables for the gasket codes K04, E02, G02, A02, G01, B01 and F01

G G
showing measurement discrepancies.

EN 1591, “Flanges and their joints — Design rules for gasketed flange connections” consists of the

following parts:
— Part 1: Calculation method
— Part 2: Gasket parameters (CEN/TR)

— Part 3: Calculation method for metal to metal contact type flanged joint (CEN/TS)

— Part 4: Qualification of personnel competency in the assembly of the bolted connections of critical

service pressurized systems Pressure Equipment Directive;
— Part 5: Calculation method for full face gasketed joints (CEN/TR).

The data values given in this document were all determined by the test methods given in EN 13555. The

data given was obtained during the PERL Project during which the test methods of EN 13555 were

assessed for practicability and repeatability by the test laboratories at MPA and CETIM (see footnotes 2

and 3 of Table A.1). The materials selected for evaluation during that project were those suggested by

the organisations taking part in the PERL project. The materials tested in that project, and therefore the

data given in this document, are just a selection of the total range of commercial gasket offerings that

are available from the various gasket manufacturers and distributors. The data presented in this

document is intended to assist engineers using EN 1591-1 during their preliminary calculations. Other

public sources of reliable data are given in Annex B. In all cases it is expected that engineers will obtain

from the manufacturer of their choice the data for the gasket intended to be used in the application in

hand. The website of the European Sealing Association, http://www.europeansealing.com/, contains

links to their members throughout Europe.

The importance of using the data for the exact style, make and thickness of gasket intended to be used

can be seen from the dispersion of the results between gasket makes within a style and thickness in this

document.

PERL, Pressure Equipment, Reduction of Leak rate: Gasket parameters measurement, RTD Project in the Framework of the

"Competitive & Sustainable Growth" Programme.
---------------------- Page: 5 ----------------------
SIST-TP CEN/TR 1591-2:2020
CEN/TR 1591-2:2020 (E)
1 Scope

This document details generic gasket parameters for use in EN 1591-1 during preliminary calculations

during which the type of gasket to be used in an application is to be decided. Once the gasket type has

been decided the parameters for gaskets of that type from the different potential commercial suppliers

should be used in further calculations as within a gasket type there will be differences depending upon

the supplier.

WARNING — For the final calculations using the method given in EN 1591-1 the reader is directed to

obtain gasket parameters for the selected generic type of gasket from the intended gasket

manufacturer. This is because the data for a generic gasket type will vary between manufacturers. This

variation can be seen in the tables of data which are embodied in this document.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

EN 1591-1, Flanges and their joints - Design rules for gasketed circular flange connections - Part 1:

Calculation

EN 13555, Flanges and their joints - Gasket parameters and test procedures relevant to the design rules

for gasketed circular flange connections
3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 1591-1 and EN 13555 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https://www.iso.org/obp/ui
— IEC Electropedia: available at http://www.electropedia.org/
4 Typical gasket parameters for various gasket styles
4.1 General

The data given in the following tables is only intended to be used in preliminary calculations using

EN 1591-1. The data was obtained using the test methods given in EN 13555 during the testing of a

selection of a few of the many styles and makes of commercial gasket that are on offer in Europe. For

final calculations the user of EN 1591-1 should contact the gasket supplier of choice and obtain the data

for the style and thickness of the gasket intended to be used.

EN 13555 permits the testing of gaskets sized for either DN40/PN40 or NPS 4 CLASS 300 flanges. All

the data values given in this document were obtained from DN40/PN40 gaskets.

It should be noted that the rules of EN 13555 regarding Q have been adhered to in that where no

Smax

collapse was found during the Q test then the value of Q is taken to be that of the surface

Smax Smax

pressure, Q , used during the P test with the highest surface pressure tabulated.

i QR

The data in the following sets of tables is presented in three gasket parameter groupings, Q and

min[L]

QSmin[L] in the 4.2 set of tables followed by QSmax and PQR in the 4.3 set and then EG and eG in the 4.4 set to

allow easy appreciation of how the parameter varies with gasket type. A brief explanation of the

parameters in the grouping is given at the start of each set. For more information about the gasket

parameters or test methods EN 13555 should be consulted.
---------------------- Page: 6 ----------------------
SIST-TP CEN/TR 1591-2:2020
CEN/TR 1591-2:2020 (E)

Data generated in accordance with EN 13555 should be used together with EN 1591-1 to ensure that a

flanged joint is as safe and as tight as required results. It will never be possible for the gasket

parameters to be tabulated at all values of the controlling parameters so results at the next “worse”

values of those controlling parameters should be used to ensure that the result is conservative.

The various parameters that are obtained from gaskets by the tests detailed in EN 13555 are inter-

related in complex ways and the guidance given below is in some respects simplistic in view of those

inter-relationships. If further guidance is required it is recommended that the favoured suppliers or

manufacturers should be consulted as they will be able to provide all the necessary guidance that is

required to aid the selection of an optimized solution for any sealing application.

Q is influenced by Q , the higher the level of Q achieved on assembly the better.

Smin[L] A A

Q will be limited by either the maximum bolt load available, the maximum flange loading that can be

permitted or the maximum gasket loading, Q , that can be withstood.
Smax

High values of Q are desirable. Where a value of Q is not tabulated at the temperature and gasket

Smax Smax

thickness of interest then the value for Q at the next higher values should be used.

Smax

For secure achievement of a given level of tightness, L, the lower the values of Q and Q the

min[L] Smin[L]

better. Where data are tabulated for more than one helium pressure then interpolation to deduce a

value for the pressure of interest is permitted. Where data are not available for the thickness of interest

then data for the next higher available thickness should be used.
Low values of Q and Q are desirable. A low difference between the Q values for
min[L] Smin[L] Smin[L]

successive values of L is also desirable as this indicates a low sensitivity to off-loading in service.

Within a gasket type, high values of P (respectively low values of Δe ) are desirable. Where a P

QR Gc QR

(respectively Δe ) value is not tabulated at exactly the required level of temperature, stiffness and

surface pressure then the value of P (respectively Δe ) at the next level above those required should

QR Gc
be used.

Low values of E are desirable but shall be considered in respect of the compressed thickness. Where a

value of E is not tabulated at exactly the required level of temperature, surface pressure and thickness

then the value of E at the next level above those required should be used.

The data in the following sets of tables was generated as the test methods of EN 13555 were evolving.

As a consequence, the data for some tested gaskets does not in all respects comply with the rules

subsequently derived and given in EN 13555. An instance of this is given by P (respectively Δe ) in

QR Gc

the 4.3 set of tables as values are only given for a stiffness of 500 kN/mm whereas the standard calls for

P (respectively Δe ) values for a range of stiffness to be determined.
QR Gc

The notes at the end of the 4.3 set of tables of Q , P and Δe give important guidance in the use of

Smax QR Gc
the data in that set of tables.

For relation between the gasket types and the codes used in the tables see Annex A.

4.2 Q , Q
min[L] Smin[L]

Q is the minimum gasket surface pressure on assembly required at ambient temperature in order

min[L]

to seat the gasket into the flange facing roughness and close the internal leakage channels so that the

tightness class is to the required level L for the internal test pressure.

Q is the minimum gasket surface pressure required under the service pressure conditions, i.e.

Smin[L]

after offloading and at the service temperature, so that the required tightness class L is maintained for

the internal test pressure. In the case of the data in Tables 2 to 16 then only values at ambient

temperature are given.

L is defined in terms of specific leakage rates in Table 1. Additional better tightness classes are

introduced as required by continuing the series.
---------------------- Page: 7 ----------------------
SIST-TP CEN/TR 1591-2:2020
CEN/TR 1591-2:2020 (E)
Table 1 — Tightness classes
Tightness Class Specific Leakage Rate
mg/(sm)
L ≤ 1,0
1,0
L ≤ 0,1
0,1
L ≤ 0,01
0,01
For the Tables 2 to 16 the following marking applies:
Q or Q values for 40 bar without underlining;
min[L] Smin[L]
Q or Q figures for 10 bar are marked by a dashed line;
min[L] Smin[L]
Q or Q figures for 80 bar are underlined;
min[L] Smin[L]
Q or Q figures for 160 bar are double underlined .
min[L] Smin[L]
Table 2 — Graphite filled spiral wound gasket with outer ring

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code 3–3-100–1, 4,5 mm
L Q Q 20 40 60 80 100 160
min[L] A
mg/(sm) MPa MPa
– Q
Smin[L]
MPa
Material
code
10 - - - - - - - -
10 10 30 35 3–3-100–1 - 10 10 10 10 10 10 10 10 10 10 11
10 49 37 57 3–3-100–1 - - 10 43 10 11 10 10 10 10 12
10 63 62 71 3–3-100–1 - - - 19 25 10 17 10 10 15
10 74 80 87 3–3-100–1 - - - 80 28 32 10 19 28
10 98 126 104 3–3-100–1 - - - - - 24 71 40
10 - - - - - - - -
10 - - - - - - - -
10 - - - - - - - -
10 - - - - - - - -
---------------------- Page: 8 ----------------------
SIST-TP CEN/TR 1591-2:2020
CEN/TR 1591-2:2020 (E)
Table 3 — Graphite filled spiral wound gasket with outer and inner ring

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code 3–4-104–1, 4,5 mm
L Q Q 20 40 60 80 100 160 320
min[L] A
mg/(sm) MPa MPa
– Q
Smin[L]
MPa
Material
code
10 - - - - - - - -
10 10 10 10 3–4-104–1 10 10 10 10 10 10 - 10 10 10
10 16 32 20 3–4-104–1 - 10 10 10 10 10 - 10 10 10
10 25 48 45 3–4-104–1 - 10 10 10 10 10 - 10 10 10
10 42 81 83 3–4-104–1 - - 16 18 17 10 - 31 10 15
10 81 143 159 3–4-104–1 - - - - 62 35 - 157 26 51
10 181 281 3–4-104–1 - - - - - - 83 198
10 314 3–4-104–1 - - - - - - 298
10 - - - - - - - -
10 - - - - - - - -
---------------------- Page: 9 ----------------------
SIST-TP CEN/TR 1591-2:2020
CEN/TR 1591-2:2020 (E)

Table 4 — Low stress, graphite filled, spiral wound gasket with outer and inner rings

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code 3–5-102–1, 4,5 mm
L Q Q 20 40 60 80 100 160 320
min[L] A
mg/(sm) MPa MPa
- Q
Smin[L]
MPa
Material
code
10 - - - - - - - - -
10 10 - 10 - - - - 10 - - - - 10
10 10 10 12 3–5-102–1 10 10 10 10 10 10 10 10 10
10 10 19 33 3–5-102–1 10 10 10 10 10 10 10 10 10
10 2970 3–5-102–1 - - - 10 20 10 14 26 168
174
10 140 231 3–5-102–1 - - - - - 82 88 230
10 154 290 3–5-102–1 - - - - - 101 123 288
10 167 3–5-102–1 - - - - - - 157
10 180 3–5-102–1 - - - - - - 192
10 194 3–5-102–1 - - - - - - 258
---------------------- Page: 10 ----------------------
SIST-TP CEN/TR 1591-2:2020
CEN/TR 1591-2:2020 (E)
Table 5 — PTFE filled spiral wound gasket with outer and inner rings

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code G03, 5,1 mm
L Q Q 60 120 180 240 300 480
min[L] A
mg/(sm) MPa MPa
– Q
Smin[L]
MPa
Material
code
10 - - - - - - - -
10 - - - - - - - -
10 30 58 G03 30 30 30 30 30 30 30
10 39 74 G03 - 30 30 30 30 30 30
10 52 90 G03 - 30 30 30 30 30 30
10 69 105 G03 - 43 30 30 30 30 30
10 101 125 G03 - - 30 30 30 30 30
10 149 166 G03 - - 97 47 48 35 34
10 353 428 G03 - - - - - 132 372
10 - - - - - - - -
---------------------- Page: 11 ----------------------
SIST-TP CEN/TR 1591-2:2020
CEN/TR 1591-2:2020 (E)
Table 6 — Corrugated metal core with graphite facing

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code 7–01–104–1, 3,2 mm
Code K04, 2,3 mm
L Q Q 20 40 60 80 100 160 320
min[L] A
mg/(sm) MPa MPa
– QSmin[L]
MPa
Material
code
10 - - - - - - - - -
10 - - - - - - - - -
10 10 7–01–104–1 10 10 10 10 10 10 10
10 K04 - - - - - - -
10 11 7–01–104–1 10 10 10 10 10 10 17
11 K04 10 10 10 10 10 10 -
10 17 10 20 7–01–104–1 10 10 10 10 10 10 - 10 24 10
10 22 K04 10 10 10 10 10 10 10 -
10 21 75 30 7–01–104–1 - 33 13 17 27 24 - 20 32 10
14 28 K04 - 10 10 10 10 11 10 10
10 45 104 40 7–01–104–1 - 18 27 46 36 - 28 37 33
41 35 K04 - 25 10 10 10 20 10
10 52 165 95 7–01–104–1 - - 32 36 66 68 - 35 116 74
84 68 K04 - - - 10 10 10 -
10 57 295 152 7–01–104–1 - - - 73 86 159 - 95 165 243
100 80 K04 - - - - 44 10 -
10 306 7–01–104–1 - - - - - - 305
---------------------- Page: 12 ----------------------
SIST-TP CEN/TR 1591-2:2020
CEN/TR 1591-2:2020 (E)
Table 7 — Metal jacketed gasket with graphite filler

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code 6–4-103–1, 3,2 mm
No sealing data for H02
L Q Q 20 40 60 80 100 160 320
min[L] A
mg/(sm) MPa MPa
– QSmin[L]
MPa
Material
code
10 34 6–4-103–1 - 10 10 10 10 10 10 20
10 55 63 6–4-103–1 - - 26 23 21 10 10 20
120
10 96 187 6–4-103–1 - - - - - 56 14 20
10 171 287 6–4-103–1 - - - - - - 35 40
10 253 6–4-103–1 - - - - - - 133
10 - - - - - - - - -
10 - - - - - - - - -
10 - - - - - - - - -
10 - - - - - - - - -
10 - - - - - - - - -
---------------------- Page: 13 ----------------------
SIST-TP CEN/TR 1591-2:2020
CEN/TR 1591-2:2020 (E)

Table 8 — Graphite covered metal jacketed gasket with graphite filler and outer ring

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code 5–5-103–1, 4,5 mm
Code H01, 4,8 mm
L Q Q 20 40 60 80 100 160 320
min[L] A
mg/(sm) MPa MPa
– QSmin[L]
MPa
Material
code
10 - - - - - - - - -
10 - - - - - - - - -
10 - 13 28 5–5-103–1 10 10 10 10 10 10 - 20 10 10
10 14 32 73 5–5-103–1 10 10 10 10 10 10 - 32 10 10
10 10 H01 10 10 10 10 10 10 -
60 69 5–5-103–1 - - - 33 25 24 22 34
10 10 15 H01 10 10 10 10 10 10 -
218 5–5-103–1 - - - - - - 131
10 14 23 H01 - 10 10 10 10 10 -
10 20 33 H01 - 15 10 10 10 10 10 -
10 31 60 H01 - - - 38 32 14 28 -
10 50 - - - - - - - 127 - -
---------------------- Page: 14 ----------------------
SIST-TP CEN/TR 1591-2:2020
CEN/TR 1591-2:2020 (E)
Table 9 — Graphite sheet with multiple thin metal insertions

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code A01, 2,1 mm
L Q Q 20 40 60 80 100 160
min[L] A
mg/(sm) MPa MPa
– Q
Smin[L]
MPa
Material
code
10 - - - - - - - -
10 - - - - - - - -
10 10 A01 10 10 10 10 10 10
10 10 30 A01 - 10 10 10 10 10
10 38 72 A01 - - - 37 17 10
10 83 120 A01 - - - - - 10 38
10 123 157 A01 - - - - - 52 150
10 - - - - - - - -
10 - - - - - - - -
10 - - - - - - - -
---------------------- Page: 15 ----------------------
SIST-TP CEN/TR 1591-2:2020
CEN/TR 1591-2:2020 (E)
Table 10 — Graphite sheet with tanged stainless steel core

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code 1–5-101–1, 2 mm
Code E02, 2,1 mm
L Q Q 20 40 60 80 100 160
min[L] A
mg/(sm) MPa MPa
– QSmin[L]
MPa
Material
code
10 - - - - - - - -
10 10 1–5-101–1 10 10 10 10 10 10
10 10 10 E02 10 10 10 10 10 10
10 15 27 1–5-101–1 10 10 10 10 10 10 10
10 28 47 E02 - - 11 10 10 10
23 41 60 1–5-101–1 - - 10 10 10 10 10
10 62 88 E02 - - - - 36 10
49 84 96 1–5-101–1 - - - - 39 10 12
10 94 122 E02 - - - - - 10 29
93 139 1–5-101–1 - - - - - 16 95
10 124 149 E02 - - - - - 33 117
135 200 1–5-101–1 - - - - - 130 -
10 151 - - - - - - - 125 -
10 - - - - - - - -
10 - - - - - - -
---------------------- Page: 16 ----------------------
SIST-TP CEN/TR 1591-2:2020
CEN/TR 1591-2:2020 (E)
Table 11 — Serrated metal core (Kammprofile) with graphite facing

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code 2–5-104–1, 4 mm
L Q Q 20 40 60 80 100 160 320
min[L] A
mg/(sm) MPa MPa
– Q
Smin[L]
MPa
Material
code
10 - - 29 2–5-104–1 - - - - - - - 10 -
10 - 10 37 2–5-104–1 - 10 - 10 - 10 - 10 - 10 - 10 10 - 10
10 10 33 50 2–5-104–1 10 10 30 10 17 10 14 10 10 10 10 23 10 10
10 12 45 62 2–5-104–1 12 16 18 32 14 24 13 23 17 10 43 10 20
10 28 53 69 2–5-104–1 - 27 29 46 22 35 20 33 24 32 62 18 30
10 47 60 76 2–5-104–1 - - 46 31 50 31 46 34 42 82 32 55
10 59 71 101 2–5-104–1 - - - 46 66 43 70 48 59 101 77 97
10 71 83 126 2–5-104–1 - - - 64 73 86 73 76 121 123 125
10 111 110 2–5-104–1 - - - - - 108 149 141 170 154
138
10 138 - 160 2–5-104–1 - - - - - 139 - 160 255
10 308 2–5-104–1 - - - - - - 316
−10
10 - - - - - - - - -
---------------------- Page: 17 ----------------------
SIST-TP CEN/TR 1591-2:2020
CEN/TR 1591-2:2020 (E)
Table 12 — Modified PTFE

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code 1–10–102–1, 2 mm
Code 1–10–100–1, 2 mm
Code G02, 2,0 mm
Code D01, 2,0 mm
Code A02, 2,0 mm
L Q Q 20 40 60 80 100 160
min[L] A
mg/(sm) MPa MPa
– Q
Smin[L]
MPa
Material
code
10 - - - - - - - -
10 10 - 1–10–102–1 10 10 10 10 10 10 10 10 - -
10 1–10–100–1 10 10 10 10
10 12 12 19 1–10–102–1 10 10 10 10 10 10 10 10 10 - -
10 10 1–10–100–1 10 10 10 10 10 - -
10 10 G02 10 10 10 10 10 10
10 D01 10 10 10 10 10 10
10 A02 10 10 10 10 10 10
10 17 16 26 1–10–102–1 11 10 10 10 10 10 10 10 10 - -
10 12 22 1–10–100–1 10 10 10 10 10 10 10 10 10 - -
11 25 G02 - 10 10 10 10 10
10 25 D01 - 10 10 10 10 10
11 A02 - 10 10 10 10 10
10 26 21 33 1–10–102–1 - 10 10 10 10 10 10 10 - -
12 17 30 1–10–100–1 10 10 10 10 10 10 10 10 10 - -
27 52 G02 - - 33 13 10 10
22 30 D01 - 10 10 10 10 10
10 15 A02 10 10 10 10 10 10
10 38 31 39 1–10–102–1 - 17 10 10 10 10 10 10 - -
17 42 37 1–10–100–1 10 - 10 10 10 10 10 10 - -
58 83 G02 - - - - 27 10
31 36 D01 - 15 10 10 10 10
12 20 A02 14 10 10 10 10 10
---------------------- Page: 18 ----------------------
SIST-TP CEN/TR 1591-2:2020
CEN/TR 1591-2:2020 (E)
10 62 41 1–10–102–1 - - 11 43 10 - -
50 - 1–10–100–1 - - 25 - 10 - - -
94 160 G02 10 -
40 54 D01 - - 33 16 10 10 10
20 58 A02 - - 50 10 11 10 10
10 67 1–10–102–1 - - - 64 - -
10 - - - - - - - -
10 - - - - - - -
Table 13 — PTFE envelope gasket

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code K02, 2,0 mm
L Q Q 20 40 60 80 100 160
min[L] A
mg/(sm) MPa MPa
– Q
Smin[L]
MPa
Material
code
10 10 K02
10 13 10 K02 10 10 10 10 10 10 10
10 17 27 K02 - 16 13 11 10 13 10
10 40 92 K02 - - - - 83 31 65
---------------------- Page: 19 ----------------------
SIST-TP CEN/TR 1591-2:2020
CEN/TR 1591-2:2020 (E)
Table 14 — Non-asbestos, fibre based sheet

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code 1–9-101–1, 2 mm
Code G01, 2 mm
Code E01, 2,1 mm
Code D02, 1,9 mm
Code B01, 2 mm
L Q Q 20 40 60 80 100 160
min[L] A
mg/(sm) MPa MPa
– Q
Smin[L]
MPa
Material
code
10 10 1–9-101–1 10 10 10 10 10 10
10 12 10 1–9-101–1 10 10 10 10 10 10 10 10 10 10 10 10
10 10 10 G01 10 10 10 10 10 10
10 10 E01 10 10 10 10 10 10
10 10 D02 10 10 10 10 10 10
10 10 B01 10 10 10 10 10 10
10 20 22 1–9-101–1 - 10 10 10 10 10 10 10 10 10 10 10
10 22 24 G01 - 10 10 10 10 10
12 48 E01 - - 15 10 10 10
40 64 D02 - - - 14 10 10
15 25 B01 - 10 10 10 10 10
16 35 43 1–9-101–1 - 10 10 10 10 10 10 10 10 10 10
10 40 54 G01 - - 19 10 10 10
56 86 E01 - - - - 22 10
77 92 D02 - - - - 34 10 13
32 42 B01 - - 10 10 10 10
33 57 69 1–9-101–1 - - 20 19 15 10 10 10 10
10 66 68 G01 - - - 19 10 10 10
84 108 E01 - - - - - 10 15
100 111 D02 - - - - - 17 32
47 54 B01 - - 19 10 10 10
60 81 95 1–9- - - - 40 33 38 17 19
101–1
---------------------- Page: 20 ----------------------
SIST-TP CEN/TR 1591-2:2020
CEN/TR 1591-2:2020 (E)
10 100 83 G01 - - - - 29 12 14
107 130 E01 - - - - - 18 39
116 134 D02 - - - - - 44 111
60 75 B01 - - - 34 20 10 19
85 112 1–9- - - - - - 33 37
130 101–1
10 130 111 G01 - - - - - 79 108
129 - E01 52 -
144 - D02 140 -
98 113 B01 92 109
108 151 1–9- - - - - - 125
101–1
10 - - - - - - - -
10 - - - - - - - -
---------------------- Page: 21 ----------------------
SIST-TP CEN/TR 1591-2:2020
CEN/TR 1591-2:2020 (E)

Table 15 — Proprietary type of graphite faced Kammprofile with secondary metal to metal seal

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code F01, 4,1 mm
L Q Q 20 40 60 80 100 160 320
min[L] A
mg/(sm) MPa MPa
– Q
Smin[L]
MPa
Material
code
10 - - - - - - - - -
10 - - - - - - - - -
10 - - - - - - - - -
10 - - - - - - - - -
10 - - - - - - - - -
10 - - - - - - - - -
10 - - - - - - - - -
10 - - - - - - - - -
10 34 F01 - - 34 - - - -
10 41 F01 - - 34 - - - -
10 47 F01 - - 34 - - - -
−10
10 54 F01 - - 45 - - - -
−11
10 61 F01 - - - - - - -
---------------------- Page: 22 ----------------------
SIST-TP CEN/TR 1591-2:2020
CEN/TR 1591-2:2020 (E)
Table 16 — Proprietary PTFE/graphite gasket with metal eyelet

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code K01, 1,9 mm
L Q Q 20 40 60 80 100 160
min[L] A
mg/(sm) MPa MPa
– Q
Smin[L]
MPa
Material
code
10 - - - - - - - -
10 - - - - - - - -
10 - - - - - - - -
10 - - - - - - - -
10 - - - - - - - -
10 10 10 K01 10 10 10 10 10 10
10 14 15 K01 - - 37 22 19 10 12
10 28 107 K01 - - - - - 18 56
10 106 K01 - - - - - 83
10 - - - - - - - -
4.3 Qsmax, PQR and ΔeGc

Q is the maximum surface pressure that may be imposed on the gasket at the indicated temperature

smax
without collapse or compressive failure of the gasket.

P is a factor to account for the effect of gasket relaxation on the gasket stress variation between the

completion of bolt up and after long term experience of the service temperature. The parameter Δe is

the additional deflection of the gasket associated to the lo
...

SLOVENSKI STANDARD
kSIST-TP FprCEN/TR 1591-2:2019
01-december-2019
Prirobnice in prirobnični spoji - Pravila za konstruiranje prirobičnih spojev,
sestavljenih iz okroglih prirobnic in tesnil - 2. del: Parametri tesnil

Flanges and their joints - Design rules for gasketed circular flange connections - Part 2:

Gasket parameters

Flansche und ihre Verbindungen - Regeln für die Auslegung von Flanschverbindungen

mit runden Flanschen und Dichtung - Teil 2: Dichtungskennwerte

Brides et leurs assemblages - Règles de calcul des assemblages à brides circulaires

avec joint - Partie 2 : Paramètres de joint
Ta slovenski standard je istoveten z: FprCEN/TR 1591-2
ICS:
23.040.60 Prirobnice, oglavki in spojni Flanges, couplings and joints
elementi
kSIST-TP FprCEN/TR 1591-2:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
---------------------- Page: 2 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
FINAL DRAFT
TECHNICAL REPORT
FprCEN/TR 1591-2
RAPPORT TECHNIQUE
TECHNISCHER BERICHT
October 2019
ICS
English Version
Flanges and their joints - Design rules for gasketed circular
flange connections - Part 2: Gasket parameters

Brides et leurs assemblages - Règles de calcul des Flansche und ihre Verbindungen - Regeln für die

assemblages à brides circulaires avec joint - Partie 2 : Auslegung von Flanschverbindungen mit runden

Paramètres de joint Flanschen und Dichtung - Teil 2: Dichtungskennwerte

This draft Technical Report is submitted to CEN members for Vote. It has been drawn up by the Technical Committee CEN/TC 74.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a Technical Report. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a Technical Report.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. FprCEN/TR 1591-2:2019 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
FprCEN/TR 1591-2:2019 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

1 Scope .................................................................................................................................................................... 4

2 Normative references .................................................................................................................................... 4

3 Terms and definitions ................................................................................................................................... 4

4 Typical gasket parameters for various gasket styles ......................................................................... 4

4.1 General ................................................................................................................................................................ 4

4.2 Q , Q ..................................................................................................................................................... 5

min[L] Smin[L]

4.3 Q , P and Δe ......................................................................................................................................... 21

smax QR Gc

4.4 E and e ........................................................................................................................................................... 26

G G

Annex A (informative) Relation between the gasket types and the codes used in the tables ....... 36

Annex B (informative) Public sources of reliable data ................................................................................ 39

Bibliography ................................................................................................................................................................. 40

---------------------- Page: 4 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
FprCEN/TR 1591-2:2019 (E)
European foreword

This document (FprCEN/TR 1591-2:2019) has been prepared by Technical Committee CEN/TC 74

“Flanges and their joints”, the secretariat of which is held by DIN.
This document is currently submitted to the vote on TR.
The major changes in comparison with EN 1591-2:2008 include:
• The introduction of the creep parameter Δe

• The introduction of the compressed gasket thickness measured during compression phase e

• The removal of E and e results tables for the gasket codes K04, E02, G02, A02, G01, B01 and F01

G G
showing measurement discrepancies

EN 1591 “Flanges and their joints — Design rules for gasketed flange connections” consists of the

following three parts:
— Part 1: Calculation method
— Part 2: Gasket parameters (CEN/TR)

— Part 3: Calculation method for metal to metal contact type flanged joint (CEN/TS)

— Part 4: Qualification of personnel competency in the assembly of the bolted connections of critical

service pressurized systems Pressure Equipment Directive;
— Part 5: Calculation method for full face gasketed joints (CEN/TR).

The data values given in this document were all determined by the test methods given in EN 13555. The

data given was obtained during the PERL Project during which the test methods of EN 13555 were

assessed for practicability and repeatability by the test laboratories at MPA and CETIM (see footnotes 2

and 3 of Table A.1). The materials selected for evaluation during that project were those suggested by

the organisations taking part in the PERL project. The materials tested in that project, and therefore the

data given in this document, are just a selection of the total range of commercial gasket offerings that

are available from the various gasket manufacturers and distributors. The data presented in this

document is intended to assist engineers using EN 1591-1 during their preliminary calculations. Other

public sources of reliable data are given in Annex B. In all cases it is expected that engineers will obtain

from the manufacturer of their choice the data for the gasket intended to be used in the application in

hand. The website of the European Sealing Association, www.europeansealing.com, contains links to

their members throughout Europe.

The importance of using the data for the exact style, make and thickness of gasket intended to be used

can be seen from the dispersion of the results between gasket makes within a style and thickness in this

document.

PERL, Pressure Equipment, Reduction of Leak rate: Gasket parameters measurement, RTD Project in the Framework of the

"Competitive & Sustainable Growth" Programme.
---------------------- Page: 5 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
FprCEN/TR 1591-2:2019 (E)
1 Scope

This document details generic gasket parameters for use in EN 1591-1 during preliminary calculations

during which the type of gasket to be used in an application is to be decided. Once the gasket type has

been decided the parameters for gaskets of that type from the different potential commercial suppliers

should be used in further calculations as within a gasket type there will be differences depending upon

the supplier.

WARNING — For the final calculations using the method given in EN 1591-1 the reader is directed to

obtain gasket parameters for the selected generic type of gasket from the intended gasket

manufacturer. This is because the data for a generic gasket type will vary between manufacturers. This

variation can be seen in the tables of data which are embodied in this document.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

EN 1591-1, Flanges and their joints - Design rules for gasketed circular flange connections - Part 1:

Calculation

EN 13555, Flanges and their joints - Gasket parameters and test procedures relevant to the design rules

for gasketed circular flange connections
3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 1591-1 and EN 13555 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
4 Typical gasket parameters for various gasket styles
4.1 General

The data given in the following tables is only intended to be used in preliminary calculations using

EN 1591-1. The data was obtained using the test methods given in EN 13555 during the testing of a

selection of a few of the many styles and makes of commercial gasket that are on offer in Europe. For

final calculations the user of EN 1591-1 should contact the gasket supplier of choice and obtain the data

for the style and thickness of the gasket intended to be used.

EN 13555 permits the testing of gaskets sized for either DN40/PN40 or NPS 4 CLASS 300 flanges. All

the data values given in this document were obtained from DN40/PN40 gaskets.

It should be noted that the rules of EN 13555 regarding Q have been adhered to in that where no

Smax

collapse was found during the Q test then the value of Q is taken to be that of the surface

Smax Smax

pressure, Q , used during the P test with the highest surface pressure tabulated.

i QR

The data in the following sets of tables is presented in three gasket parameter groupings, Q and

min[L]

Q in the 4.2 set of tables followed by Q and P in the 4.3 set and then E and e in the 4.4 set to

Smin[L] Smax QR G G

allow easy appreciation of how the parameter varies with gasket type. A brief explanation of the

parameters in the grouping is given at the start of each set. For more information about the gasket

parameters or test methods EN 13555 should be consulted.
---------------------- Page: 6 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
FprCEN/TR 1591-2:2019 (E)

Data generated in accordance with EN 13555 should be used together with EN 1591-1 to ensure that a

flanged joint is as safe and as tight as required results. It will never be possible for the gasket

parameters to be tabulated at all values of the controlling parameters so results at the next “worse”

values of those controlling parameters should be used to ensure that the result is conservative.

The various parameters that are obtained from gaskets by the tests detailed in EN 13555 are inter-

related in complex ways and the guidance given below is in some respects simplistic in view of those

inter-relationships. If further guidance is required it is recommended that the favoured suppliers or

manufacturers should be consulted as they will be able to provide all the necessary guidance that is

required to aid the selection of an optimized solution for any sealing application.

Q is influenced by Q , the higher the level of Q achieved on assembly the better.

Smin[L] A A

Q will be limited by either the maximum bolt load available, the maximum flange loading that can be

permitted or the maximum gasket loading, Q , that can be withstood.
Smax

High values of Q are desirable. Where a value of Q is not tabulated at the temperature and gasket

Smax Smax

thickness of interest then the value for Q at the next higher values should be used.

Smax

For secure achievement of a given level of tightness, L, the lower the values of Q and Q the

min[L] Smin[L]

better. Where data are tabulated for more than one helium pressure then interpolation to deduce a

value for the pressure of interest is permitted. Where data are not available for the thickness of interest

then data for the next higher available thickness should be used.
Low values of Q and Q are desirable. A low difference between the Q values for
min[L] Smin[L] Smin[L]

successive values of L is also desirable as this indicates a low sensitivity to off-loading in service.

Within a gasket type, high values of P (respectively low values of Δe ) are desirable. Where a P

QR Gc QR

(respectively Δe ) value is not tabulated at exactly the required level of temperature, stiffness and

surface pressure then the value of P (respectively Δe ) at the next level above those required should

QR Gc
be used.

Low values of E are desirable but shall be considered in respect of the compressed thickness. Where a

value of E is not tabulated at exactly the required level of temperature, surface pressure and thickness

then the value of E at the next level above those required should be used.

The data in the following sets of tables was generated as the test methods of EN 13555 were evolving.

As a consequence, the data for some tested gaskets does not in all respects comply with the rules

subsequently derived and given in EN 13555. An instance of this is given by P (respectively Δe ) in

QR Gc

the 4.3 set of tables as values are only given for a stiffness of 500 kN/mm whereas the standard calls for

P (respectively Δe ) values for a range of stiffness to be determined.
QR Gc

The notes at the end of the 4.3 set of tables of Q , P and Δe give important guidance in the use of

Smax QR Gc
the data in that set of tables.

For relation between the gasket types and the codes used in the tables see Annex A.

4.2 Q , Q
min[L] Smin[L]

Q is the minimum gasket surface pressure on assembly required at ambient temperature in order

min[L]

to seat the gasket into the flange facing roughness and close the internal leakage channels so that the

tightness class is to the required level L for the internal test pressure.

Q is the minimum gasket surface pressure required under the service pressure conditions, i.e.

Smin[L]

after offloading and at the service temperature, so that the required tightness class L is maintained for

the internal test pressure. In the case of the data in Tables 2 to 16 then only values at ambient

temperature are given.

L is defined in terms of specific leakage rates in Table 1. Additional better tightness classes are

introduced as required by continuing the series.
---------------------- Page: 7 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
FprCEN/TR 1591-2:2019 (E)
Table 1 — Tightness classes
Tightness Class Specific Leakage Rate
mg/(sm)
L ≤ 1,0
1,0
L ≤ 0,1
0,1
L ≤ 0,01
0,01
For the Tables 2 to 16 the following marking applies:
Q or Q values for 40 bar without underlining;
min[L] Smin[L]
Q or Q figures for 10 bar are marked by a dashed line;
min[L] Smin[L]
Q or Q figures for 80 bar are underlined;
min[L] Smin[L]
Q or Q figures for 160 bar are double underlined .
min[L] Smin[L]
Table 2 — Graphite filled spiral wound gasket with outer ring

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code 3–3-100–1, 4,5 mm
L Q Q 20 40 60 80 100 160
min[L] A
mg/(sm) MPa MPa
– Q
Smin[L]
MPa
Material
code
10 - - - - - - - -
10 10 30 35 3–3-100–1 - 10 10 10 10 10 10 10 10 10 10 11
10 49 37 57 3–3-100–1 - - 10 43 10 11 10 10 10 10 12
10 63 62 71 3–3-100–1 - - - 19 25 10 17 10 10 15
10 74 80 87 3–3-100–1 - - - 80 28 32 10 19 28
10 98 126 104 3–3-100–1 - - - - - 24 71 40
10 - - - - - - - -
10 - - - - - - - -
10 - - - - - - - -
10 - - - - - - - -
---------------------- Page: 8 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
FprCEN/TR 1591-2:2019 (E)
Table 3 — Graphite filled spiral wound gasket with outer and inner ring

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code 3–4-104–1, 4,5 mm
L Q Q 20 40 60 80 100 160 320
min[L] A
mg/(sm MPa MPa
– QSmin[L]
MPa
Material
code
10 - - - - - - - -
10 10 10 10 3–4-104–1 10 10 10 10 10 10 - 10 10 10
10 16 32 20 3–4-104–1 - 10 10 10 10 10 - 10 10 10
10 25 48 45 3–4-104–1 - 10 10 10 10 10 - 10 10 10
10 42 81 83 3–4-104–1 - - 16 18 17 10 - 31 10 15
10 81 143 159 3–4-104–1 - - - - 62 35 - 157 26 51
10 181 281 3–4-104–1 - - - - - - 83 198
10 314 3–4-104–1 - - - - - - 298
10 - - - - - - - -
10 - - - - - - - -
---------------------- Page: 9 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
FprCEN/TR 1591-2:2019 (E)

Table 4 — Low stress, graphite filled, spiral wound gasket with outer and inner rings

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code 3–5-102–1, 4,5 mm
L Q Q 20 40 60 80 100 160 320
min[L] A
mg/(sm) MPa MPa
- Q
Smin[L]
MPa
Material
code
10 - - - - - - - - -
10 10 - 10 - - - - 10 - - - - 10
10 10 10 12 3–5-102–1 10 10 10 10 10 10 10 10 10
10 10 19 33 3–5-102–1 10 10 10 10 10 10 10 10 10
10 2970 3–5-102–1 - - - 10 20 10 14 26 168
174
10 140 231 3–5-102–1 - - - - - 82 88 230
10 154 290 3–5-102–1 - - - - - 101 123 288
10 167 3–5-102–1 - - - - - - 157
10 180 3–5-102–1 - - - - - - 192
10 194 3–5-102–1 - - - - - - 258
---------------------- Page: 10 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
FprCEN/TR 1591-2:2019 (E)
Table 5 — PTFE filled spiral wound gasket with outer and inner rings

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code G03, 5,1 mm
L Q Q 60 120 180 240 300 480
min[L] A
mg/(sm) MPa MPa
– Q
Smin[L]
MPa
Material
code
10 - - - - - - - -
10 - - - - - - - -
10 30 58 G03 30 30 30 30 30 30 30
10 39 74 G03 - 30 30 30 30 30 30
10 52 90 G03 - 30 30 30 30 30 30
10 69 105 G03 - 43 30 30 30 30 30
10 101 125 G03 - - 30 30 30 30 30
10 149 166 G03 - - 97 47 48 35 34
10 353 428 G03 - - - - - 132 372
10 - - - - - - - -
---------------------- Page: 11 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
FprCEN/TR 1591-2:2019 (E)
Table 6 — Corrugated metal core with graphite facing

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code 7–01–104–1, 3,2 mm
Code K04, 2,3 mm
L Q Q 20 40 60 80 100 160 320
min[L] A
mg/(sm) MPa MPa
– QSmin[L]
MPa
Material
code
10 - - - - - - - - -
10 - - - - - - - - -
10 10 7–01–104–1 10 10 10 10 10 10 10
10 K04 - - - - - - -
10 11 7–01–104–1 10 10 10 10 10 10 17
11 K04 10 10 10 10 10 10 -
10 17 10 20 7–01–104–1 10 10 10 10 10 10 - 10 24 10
10 22 K04 10 10 10 10 10 10 10 -
10 21 75 30 7–01–104–1 - 33 13 17 27 24 - 20 32 10
14 28 K04 - 10 10 10 10 11 10 10
10 45 104 40 7–01–104–1 - 18 27 46 36 - 28 37 33
41 35 K04 - 25 10 10 10 20 10
10 52 165 95 7–01–104–1 - - 32 36 66 68 - 35 116 74
84 68 K04 - - - 10 10 10 -
10 57 295 152 7–01–104–1 - - - 73 86 159 - 95 165 243
100 80 K04 - - - - 44 10 -
10 306 7–01–104–1 - - - - - - 305
---------------------- Page: 12 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
FprCEN/TR 1591-2:2019 (E)
Table 7 — Metal jacketed gasket with graphite filler

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code 6–4-103–1, 3,2 mm
No sealing data for H02
L Q Q 20 40 60 80 100 160 320
min[L] A
mg/(sm) MPa MPa
– QSmin[L]
MPa
Material
code
10 34 6–4-103–1 - 10 10 10 10 10 10 20
10 55 63 6–4-103–1 - - 26 23 21 10 10 20
120
10 96 187 6–4-103–1 - - - - - 56 14 20
10 171 287 6–4-103–1 - - - - - - 35 40
10 253 6–4-103–1 - - - - - - 133
10 - - - - - - - - -
10 - - - - - - - - -
10 - - - - - - - - -
10 - - - - - - - - -
10 - - - - - - - - -
---------------------- Page: 13 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
FprCEN/TR 1591-2:2019 (E)

Table 8 — Graphite covered metal jacketed gasket with graphite filler and outer ring

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code 5–5-103–1, 4,5 mm
Code H01, 4,8 mm
L Q Q 20 40 60 80 100 160 320
min[L] A
mg/(sm) MPa MPa
– QSmin[L]
MPa
Material
code
10 - - - - - - - - -
10 - - - - - - - - -
10 - 13 28 5–5-103–1 10 10 10 10 10 10 - 20 10 10
10 14 32 73 5–5-103–1 10 10 10 10 10 10 - 32 10 10
10 10 H01 10 10 10 10 10 10 -
60 69 5–5-103–1 - - - 33 25 24 22 34
10 10 15 H01 10 10 10 10 10 10 -
218 5–5-103–1 - - - - - - 131
10 14 23 H01 - 10 10 10 10 10 -
10 20 33 H01 - 15 10 10 10 10 10 -
10 31 60 H01 - - - 38 32 14 28 -
10 50 - - - - - - - 127 - -
---------------------- Page: 14 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
FprCEN/TR 1591-2:2019 (E)
Table 9 — Graphite sheet with multiple thin metal insertions

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code A01, 2,1 mm
L Q Q 20 40 60 80 100 160
min[L] A
mg/(sm) MPa MPa
– Q
Smin[L]
MPa
Material
code
10 - - - - - - - -
10 - - - - - - - -
10 10 A01 10 10 10 10 10 10
10 10 30 A01 - 10 10 10 10 10
10 38 72 A01 - - - 37 17 10
10 83 120 A01 - - - - - 10 38
10 123 157 A01 - - - - - 52 150
10 - - - - - - - -
10 - - - - - - - -
10 - - - - - - - -
---------------------- Page: 15 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
FprCEN/TR 1591-2:2019 (E)
Table 10 — Graphite sheet with tanged stainless steel core

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code 1–5-101–1, 2 mm
Code E02, 2,1 mm
L Q Q 20 40 60 80 100 160
min[L] A
mg/(sm) MPa MPa
– QSmin[L]
MPa
Material
code
10 - - - - - - - -
10 10 1–5-101–1 10 10 10 10 10 10
10 10 10 E02 10 10 10 10 10 10
10 15 27 1–5-101–1 10 10 10 10 10 10 10
10 28 47 E02 - - 11 10 10 10
23 41 60 1–5-101–1 - - 10 10 10 10 10
10 62 88 E02 - - - - 36 10
49 84 96 1–5-101–1 - - - - 39 10 12
10 94 122 E02 - - - - - 10 29
93 139 1–5-101–1 - - - - - 16 95
10 124 149 E02 - - - - - 33 117
135 200 1–5-101–1 - - - - - 130 -
10 151 - - - - - - - 125 -
10 - - - - - - - -
10 - - - - - - -
---------------------- Page: 16 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
FprCEN/TR 1591-2:2019 (E)
Table 11 — Serrated metal core (Kammprofile) with graphite facing

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code 2–5-104–1, 4 mm
L Q Q 20 40 60 80 100 160 320
min[L] A
mg/(sm) MPa MPa
– Q
Smin[L]
MPa
Material
code
10 - - 29 2–5-104–1 - - - - - - - 10 -
10 - 10 37 2–5-104–1 - 10 - 10 - 10 - 10 - 10 - 10 10 - 10
10 10 33 50 2–5-104–1 10 10 30 10 17 10 14 10 10 10 10 23 10 10
10 12 45 62 2–5-104–1 12 16 18 32 14 24 13 23 17 10 43 10 20
10 28 53 69 2–5-104–1 - 27 29 46 22 35 20 33 24 32 62 18 30
10 47 60 76 2–5-104–1 - - 46 31 50 31 46 34 42 82 32 55
10 59 71 101 2–5-104–1 - - - 46 66 43 70 48 59 101 77 97
10 71 83 126 2–5-104–1 - - - 64 73 86 73 76 121 123 125
10 111 110 2–5-104–1 - - - - - 108 149 141 170 154
138
10 138 - 160 2–5-104–1 - - - - - 139 - 160 255
10 308 2–5-104–1 - - - - - - 316
−10
10 - - - - - - - - -
---------------------- Page: 17 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
FprCEN/TR 1591-2:2019 (E)
Table 12 — Modified PTFE

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code 1–10–102–1, 2 mm
Code 1–10–100–1, 2 mm
Code G02, 2,0 mm
Code D01, 2,0 mm
Code A02, 2,0 mm
L Q Q 20 40 60 80 100 160
min[L] A
mg/(sm) MPa MPa
– Q
Smin[L]
MPa
Material
code
10 - - - - - - - -
10 10 - 1–10–102–1 10 10 10 10 10 10 10 10 - -
10 1–10–100–1 10 10 10 10
10 12 12 19 1–10–102–1 10 10 10 10 10 10 10 10 10 - -
10 10 1–10–100–1 10 10 10 10 10 - -
10 10 G02 10 10 10 10 10 10
10 D01 10 10 10 10 10 10
10 A02 10 10 10 10 10 10
10 17 16 26 1–10–102–1 11 10 10 10 10 10 10 10 10 - -
10 12 22 1–10–100–1 10 10 10 10 10 10 10 10 10 - -
11 25 G02 - 10 10 10 10 10
10 25 D01 - 10 10 10 10 10
11 A02 - 10 10 10 10 10
10 26 21 33 1–10–102–1 - 10 10 10 10 10 10 10 - -
12 17 30 1–10–100–1 10 10 10 10 10 10 10 10 10 - -
27 52 G02 - - 33 13 10 10
22 30 D01 - 10 10 10 10 10
10 15 A02 10 10 10 10 10 10
---------------------- Page: 18 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
FprCEN/TR 1591-2:2019 (E)
L Q Q 20 40 60 80 100 160
min[L] A
mg/(sm) MPa MPa
– Q
Smin[L]
MPa
Material
code
10 38 31 39 1–10–102– - 17 10 10 10 10 10 10 - -
17 42 37 1–10–100– 10 - 10 10 10 10 10 10 - -
58 83 G02 - - - - 27 10
31 36 D01 - 15 10 10 10 10
12 20 A02 14 10 10 10 10 10
10 62 41 1–10–102– - - 11 43 10 - -
50 - 1–10–100– - - 25 - 10 - - -
94 160 G02 10 -
40 54 D01 - - 33 16 10 10 10
20 58 A02 - - 50 10 11 10 10
10 67 1–10–102– - - - 64 - -
10 - - - - - - - -
10 - - - - - - -
Table 13 — PTFE envelope gasket

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code K02, 2,0 mm
L Q Q 20 40 60 80 100 160
min[L] A
mg/(sm) MPa MPa
– QSmin[L]
MPa
Material
code
10 10 K02
10 13 10 K02 10 10 10 10 10 10 10
10 17 27 K02 - 16 13 11 10 13 10
10 40 92 K02 - - - - 83 31 65
---------------------- Page: 19 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
FprCEN/TR 1591-2:2019 (E)
Table 14 — Non-asbestos, fibre based sheet

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code 1–9-101–1, 2 mm
Code G01, 2 mm
Code E01, 2,1 mm
Code D02, 1,9 mm
Code B01, 2 mm
L Q Q 20 40 60 80 100 160
min[L] A
mg/(sm) MPa MPa
– Q
Smin[L]
MPa
Material
code
10 10 1–9-101–1 10 10 10 10 10 10
10 12 10 1–9-101–1 10 10 10 10 10 10 10 10 10 10 10 10
10 10 10 G01 10 10 10 10 10 10
10 10 E01 10 10 10 10 10 10
10 10 D02 10 10 10 10 10 10
10 10 B01 10 10 10 10 10 10
10 20 22 1–9-101–1 - 10 10 10 10 10 10 10 10 10 10 10
10 22 24 G01 - 10 10 10 10 10
12 48 E01 - - 15 10 10 10
40 64 D02 - - - 14 10 10
15 25 B01 - 10 10 10 10 10
16 35 43 1–9-101–1 - 10 10 10 10 10 10 10 10 10 10
10 40 54 G01 - - 19 10 10 10
56 86 E01 - - - - 22 10
77 92 D02 - - - - 34 10 13
32 42 B01 - - 10 10 10 10
33 57 69 1–9-101–1 - - 20 19 15 10 10 10 10
---------------------- Page: 20 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
FprCEN/TR 1591-2:2019 (E)
L Q Q 20 40 60 80 100 160
min[L] A
mg/(sm) MPa MPa
– Q
Smin[L]
MPa
Material
code
10 66 68 G01 - - - 19 10 10 10
84 108 E01 - - - - - 10 15
100 111 D02 - - - - - 17 32
47 54 B01 - - 19 10 10 10
60 81 95 1–9- - - - 40 33 38 17 19
101–1
10 100 83 G01 - - - - 29 12 14
107 130 E01 - - - - - 18 39
116 134 D02 - - - - - 44 111
60 75 B01 - - - 34 20 10 19
85 112 1–9- - - - - - 33 37
130 101–1
10 130 111 G01 - - - - - 79 108
129 - E01 52 -
144 - D02 140 -
98 113 B01 92 109
108 151 1–9- - - - - - 125
101–1
10 - - - - - - - -
10 - - - - - - - -
---------------------- Page: 21 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
FprCEN/TR 1591-2:2019 (E)

Table 15 — Proprietary type of graphite faced Kammprofile with secondary metal to metal seal

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code F01, 4,1 mm
L Q Q 20 40 60 80 100 160 320
min[L] A
mg/(sm) MPa MPa
– Q
Smin[L]
MPa
Material
code
10 - - - - - - - - -
10 - - - - - - - - -
10 - - - - - - - - -
10 - - - - - - - - -
10 - - - - - - - - -
10 - - - - - - - - -
10 - - - - - - - - -
10 - - - - - - - - -
10 34 F01 - - 34 - - - -
10 41 F01 - - 34 - - - -
10 47 F01 - - 34 - - - -
−10
10 54 F01 - - 45 - - - -
−11
10 61 F01 - - - - - - -
---------------------- Page: 22 ----------------------
kSIST-TP FprCEN/TR 1591-2:2019
FprCEN/TR 1591-2:2019 (E)
Table 16 — Proprietary PTFE/graphite gasket with metal eyelet

Q , Q for 40 bar of helium, plus some data for other pressures, at ambient temperature,

min[L] Smin[L]
Code K01, 1,9 mm
L Q Q 20 40 60 80 100 160
min[L] A
mg/(sm) MPa MPa
– Q
Smin[L]
MPa
Material
code
10 - - - - - - - -
10 - - - - - - - -
10 - - - - - - - -
10 - - - - - - - -
10 - - - - - - - -
10 10 10 K01 10 10 10 10 10 10
10 14 15 K01 - - 37
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.