Flanges and their joints - Gaskets for Class-designated flanges - Part 7: Covered metal jacketed gaskets for use with steel flanges

This European Standard specifies the construction, dimensions and marking of covered serrated metal jacketed gaskets for use with flanges complying with prEN 1759 1 for Class 150, Class 300, Class 600, Class 900. Class 1 500 for sizes up to and including NPS 24, and for Class designation 2 500 up to and including NPS 12.
This European Standard does not extend to covered metal jacketed based heat exchanger gaskets with pass bars or large vessel gaskets but, in the lack of a dedicated document for such gaskets, the principles set down may be applied to them.
NOTE 1   Dimensions of other types of gaskets for use with flanges to prEN 1759 1, EN 1759 3 and EN 1759 4 are given in EN 12560 1, EN 12560 2, EN 12560 3, EN 12560 4, EN 12560 5 and EN 12560 6.
NOTE 2   Annex A lists information that should be supplied by the purchaser when ordering gaskets in circumstances where the choice of the gasket materials appropriate to the service is left to the supplier.

Flansche und ihre Verbindungen - Dichtungen für Flansche mit Class-Bezeichnung - Teil 7: Metallummantelte Dichtungen mit Auflage für Stahlflansche

Diese Europäische Norm legt die Ausführung, Maße und Kennzeichnung von metallummantelten Dichtungen mit Auflage für Flansche nach EN 1759-1 für Class 150, Class 300, Class 600, Class 900, Class 1 500 bis ein-schließlich NPS 24 und für Class 2 500 bis einschließlich NPS 12 fest.
Dieses Dokument gilt nicht für metallummantelte Dichtungen mit Auflage für Wärmeaustauscher mit Trennwand-stegen oder große Behälterdichtungen, falls jedoch für diese Dichtungen kein eigenes Dokument vorliegt, können die hier festgelegten Prinzipien angewendet werden.
ANMERKUNG 1   Die Maße für andere Dichtungsformen für Flansche nach prEN 1759-1, prEN 1759-3 und EN 1759-4 sind in EN 12560-1, EN 12560-2, EN 12560-3, EN 12560-4, EN 12560-5 und prEN 12560-6 enthalten.
ANMERKUNG 2   Anhang A enthält Angaben, die der Anwender bei der Bestellung von Dichtungen machen sollte, wenn die Auswahl der für den Anwendungsfall geeigneten Dichtungswerkstoffe dem Lieferer überlassen bleibt.

Brides et leurs assemblages - Joints pour les brides désignées Class - Partie 7: Joints métalloplastiques revêtus pour utilisation avec des brides en acier

La présente Norme européenne prescrit la construction, les dimensions et le marquage des joints métalloplastiques revêtus utilisés avec les brides conformes au prEN 1759-1 pour les désignations Class 150, Class 300, Class 600, Class 900 et Class 1 500, jusqu'à et y compris NPS 24, et pour les désignations Class 2 500, jusqu'à et y compris NPS 12.
La présente Norme européenne ne s'applique pas aux joints métalloplastiques revêtus pour échangeur thermique multi-passes ou grands récipients mais, en l'absence de document consacré à de tels joints, les principes établis peuvent leur être appliqués.
NOTE 1   Les dimensions des autres types de joints utilisés avec des brides conformes aux prEN 1759-1, EN 1759-3 et EN 1759-4 sont données dans les EN 12560-1, EN 12560-2, EN 12560-3, EN 12560-4, EN 12560-5 et EN 12560-6.
NOTE 2   L'Annexe A liste les informations que l'acheteur peut fournir lors de sa commande de joints lorsque le choix des matériaux de joint appropriés à l'utilisation est laissé au fournisseur.

Prirobnice in prirobnični spoji - Tesnila za prirobnice z oznako Class - 7. del: Kovinska oplaščena tesnila za jeklene prirobnice

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Flansche und ihre Verbindungen - Dichtungen für Flansche mit Class-Bezeichnung - Teil 7: Metallummantelte Dichtungen mit Auflage für StahlflanscheBrides et leurs assemblages - Joints pour les brides désignées Class - Partie 7: Joints métalloplastiques revetus pour utilisation avec des brides en acierFlanges and their joints - Gaskets for Class-designated flanges - Part 7: Covered metal jacketed gaskets for use with steel flanges23.040.80Tesnila za cevne zvezeSeals for pipe and hose assemblies23.040.60Prirobnice, oglavki in spojni elementiFlanges, couplings and jointsICS:Ta slovenski standard je istoveten z:EN 12560-7:2004SIST EN 12560-7:2004en01-september-2004SIST EN 12560-7:2004SLOVENSKI

STANDARD
SIST EN 12560-7:2004

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12560-7June 2004ICS 23.040.80English versionFlanges and their joints - Gaskets for Class-designated flanges -Part 7: Covered metal jacketed gaskets for use with steelflangesBrides et leurs assemblages - Joints pour les bridesdésignées Class - Partie 7: Joints métalloplastiquesrevêtus pour utilisation avec des brides en acierFlansche und ihre Verbindungen - Dichtungen für Flanschemit Class-Bezeichnung - Teil 7: MetallummantelteDichtungen mit Auflage für StahlflanscheThis European Standard was approved by CEN on 1 April 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36

B-1050 Brussels© 2004 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12560-7:2004: ESIST EN 12560-7:2004

EN 12560-7:2004 (E) 2 Contents page Foreword..............................................................................................................................................................3 1 Scope......................................................................................................................................................4 2 Normative references............................................................................................................................4 3 Terms and definitions...........................................................................................................................4 4 Designations..........................................................................................................................................4 4.1 Range of Class designations................................................................................................................4 4.2 Range of gasket sizes...........................................................................................................................5 4.3 Gasket types...........................................................................................................................................5 4.4 Information to be supplied by the purchaser.....................................................................................5 5 Constructional details...........................................................................................................................5 5.1 General details.......................................................................................................................................5 5.2 Metal jacket.............................................................................................................................................7 5.2.1 Metal jacket description........................................................................................................................7 5.2.2 Metal jacket material..............................................................................................................................7 5.3 Soft filler.................................................................................................................................................7 5.3.1 Soft filler description.............................................................................................................................7 5.3.2 Soft filler material...................................................................................................................................7 5.4 Covering layers......................................................................................................................................8 5.4.1 Covering layers description.................................................................................................................8 5.4.2 Covering layers material.......................................................................................................................8 5.5 Inner and outer rings.............................................................................................................................8 5.5.1 Inner and outer rings description........................................................................................................8 5.5.2 Inner and outer rings material..............................................................................................................9 5.6 Attachment of facing.............................................................................................................................9 5.6.1 Methods of attachment.........................................................................................................................9 5.6.2 De-greasing of core...............................................................................................................................9 5.6.3 Number of joins......................................................................................................................................9 5.6.4 Excessive facing....................................................................................................................................9 5.7 Integrity of facing attachment..............................................................................................................9 5.8 Construction characteristics details....................................................................................................9 6 Dimenisons...........................................................................................................................................10 7 Marking.................................................................................................................................................12 8 Colour coding.......................................................................................................................................13 9 Packaging.............................................................................................................................................13 Annex A (informative)

Information to be supplied by the purchaser........................................................15 Annex B (informative)

A-deviation................................................................................................................16 Bibliography......................................................................................................................................................18

SIST EN 12560-7:2004

EN 12560-7:2004 (E) 3 Foreword This document (EN 12560-7:2004) has been prepared by Technical Committee CEN/TC 74 “Flanges and their joints”, the secretariat of which is held by DIN.

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2004, and conflicting national standards shall be withdrawn at the latest by December 2004. The annex A is informative and contains "Information to be supplied by the purchaser". The annex B is informative and contains "A-deviations". EN 12560 consists of 7 parts: Part 1: Non-metallic flat gaskets with or without inserts Part 2: Spiral wound gaskets for use with steel flanges Part 3: Non-metallic PTFE envelope gaskets Part 4: Corrugated, flat or grooved metallic and filled metallic gaskets for use with steel flanges Part 5: Metallic ring joint gaskets for use with steel flanges Part 6: Covered serrated metal gaskets for use with steel flanges Part 7: Covered metal jacketed gaskets for use with steel flanges According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

SIST EN 12560-7:2004

EN 12560-7:2004 (E) 4 1 Scope This European Standard specifies the construction, dimensions and marking of covered

metal jacketed gaskets for use with flanges complying with prEN 1759-1 for Class 150, Class 300, Class 600, Class 900. Class 1 500 for sizes up to and including NPS 24, and for Class designation 2 500 up to and including NPS 12. This European Standard does not extend to covered metal jacketed based heat exchanger gaskets with pass bars or large vessel gaskets but, in the lack of a dedicated document for such gaskets, the principles set down may be applied to them. NOTE 1 Dimensions of other types of gaskets for use with flanges to prEN 1759-1, EN 1759-3 and EN 1759-4 are given in EN 12560-1, EN 12560-2, EN 12560-3, EN 12560-4, EN 12560-5 and EN 12560-6. NOTE 2 Annex A lists information that should be supplied by the purchaser when ordering gaskets in circumstances where the choice of the gasket materials appropriate to the service is left to the supplier. 2 Normative references Not applicable. 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 covered metal jacketed gasket consists of a sealing element with or without a location ring which may not be rigidly fixed to the sealing element NOTE The sealing element consists of a metal jacketed core and a conformable sealing material adhered both top and lower metal jacketed core surfaces. 3.2 DN see EN ISO 6708 3.3 NPS see EN 1759-3 3.4 Class see EN 1759-3 4 Designations 4.1 Range of Class designations Gaskets shall be designated as suitable for use with one or more of the following Class designations of flange: Class 150, Class 300, Class 600, Class 900, Class 1 500 and Class 2 500. SIST EN 12560-7:2004

EN 12560-7:2004 (E) 5 4.2 Range of gasket sizes Gasket nominal sizes shall also be designated in accordance with the ranges specified in Tables 2 and 3. The general principles described in this standard shall be applied to gaskets outside of the ranges specified in Tables 2 and 3 by agreement between supplier and customer. 4.3 Gasket types Gasket types, as illustrated in Figure 1, shall be designated as: Type SC: Sealing element self centring (used with type C/D or E/F flange facings); Type C/I: Sealing element with inner ring (used with type C/D or E/F flange facings); Type C/O: Sealing element with centring ring (used with type A or B flange facings); Type C/IO: Sealing element with centring ring and inner ring (used with type A or B flange facings). The type A, type B, type C/D, type E/F flange facings are specified in prEN 1759-1. 4.4 Information to be supplied by the purchaser The selection of gasket materials and type should take into account the fluid, the operating conditions and the properties of the gasket materials as well as the type of flange. It is recommended that the selection of a gasket for any particular application is made in consultation with the gasket supplier who will advise on the materials required for a particular service (see annex A). 5 Constructional details 5.1 General details The covered metal jacketed gasket shall consist of a metal jacketed core and of covering layers stuck on both sides. All gasket sizes and classes shall be designed so that an applied uniform bolt stress of 200 MPa will correctly seat the gasket and offer the required level of seal. Gaskets for which dimensions are specified shall be one of the designs shown in Figure 1. SIST EN 12560-7:2004

EN 12560-7:2004 (E) 6
a) Type SC
b) Type C/I
c) Type C/O
d) Type C/IO Figure 1 — Covered metal jacketed gaskets

a) gaskets (C/O or C/IO type) for use with type A (flat face) or type B (raised face) flanges

b) gaskets (SC or C/I type) for use with type C/D (tongue/groove) or type E/F (spigot/recess) flanges Key 1 Centring ring 2 Sealing element 3 Inner ring Figure 2 — Examples of typical covered metal jacketed gaskets configurations SIST EN 12560-7:2004

EN 12560-7:2004 (E) 7 5.2 Metal jacket 5.2.1 Metal jacket description The tolerance of the inside and the outside diameters of metal jacket cross section are given in Tables 2 and 3. Thickness of the metal jacket cross section is depending on the soft filler material. 5.2.2 Metal jacket material The material of the shell of the metal jacket shall be selected to be compatible with the intended service. Table 4 lists the most frequently used materials. The shell of the metal jacket shall have a thickness between 0,3 mm and 0,5 mm. 5.3 Soft filler 5.3.1 Soft filler description The thickness of the soft filler material shall be selected to ensure:  a good compressibility and elastic recovery of the gasket in order to compensate as much as possible the flatness defaults and to respond to variations due to operating conditions;  a final thickness (with covering layers) adapted with the length of the piping line (after tightening);  the compatibility with the assembly specification (spigot and recess or tongue and groove, metal to metal contact, ...). 5.3.2 Soft filler material The filler material shall be selected in accordance with the intended service but as guidance, satisfactory mechanical behaviour is usually obtained with the following soft filler materials: Suitable expanded graphite is:  98 % purity, ash content max. 2 %, sulphur content max. 1 000 × 10-6 (ppm), halogen contents

max. 50 × 10-6 (ppm),  the initial density shall be 1,0 g/cm3 to 1,1 g/cm3. Suitable expanded PTFE is:  Not recycled 100 % expanded PTFE,  the initial density shall be 0,7 g/cm3

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