SIST ISO 16589-1:2014

Rotary shaft lip-type seals incorporating thermoplastic sealing elements - Part 1: Nominal dimensions and tolerances

ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds based on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use under low pressure conditions. This part of ISO 16589 shows seal types and examples. It also specifies the nominal dimensions and tolerance of the seals, shafts and housings, as well as a dimensional identification code.

Bagues d'étanchéité à lèvres pour arbres tournants incorporant des éléments d'étanchéité thermoplastiques - Partie 1: Dimensions nominales et tolérances

Fluidna tehnika - Ustnične gredne tesnilke s termoplastičnimi tesnilnimi elementi - 1. del: Nazivne mere in tolerance

General Information

• Status: Published
• Public Enquiry End Date: 31-Jan-2014
• Publication Date: 06-Feb-2014
• ICS: 23.100.60 - Filters, seals and contamination of fluids
• Technical Committee: IHPV - Hydraulics and pneumatics
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 04-Feb-2014
• Due Date: 11-Apr-2014
• Completion Date: 07-Feb-2014
• Ref Project: ISO 16589-1:2011 - Rotary shaft lip-type seals incorporating thermoplastic sealing elements — Part 1: Nominal dimensions and tolerances

Relations

• Replaces: SIST ISO 16589-1:2002 - Rotary shaft lip-type seals incorporating thermoplastic sealing elements -- Part 1: Nominal dimensions and tolerances
• Effective Date: 01-Mar-2014

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 16589-1
Second edition
2011-04-15

Rotary shaft lip-type seals incorporating
thermoplastic sealing elements —
Part 1:
Nominal dimensions and tolerances
Bagues d'étanchéité à lèvres pour arbres tournants incorporant des
éléments d'étanchéité thermoplastiques —
Partie 1: Dimensions nominales et tolérances




Reference number
ISO 16589-1:2011(E)
©
ISO 2011

---------------------- Page: 1 ----------------------
ISO 16589-1:2011(E)

COPYRIGHT PROTECTED DOCUMENT


©  ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published in Switzerland

ii © ISO 2011 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 16589-1:2011(E)
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Terms and definitions .1
4 Symbols.1
5 Seal types and examples.2
5.1 Seal outside diameter construction .2
5.2 Sealing lip arrangements.2
6 Pressure and nominal dimensions.3
6.1 Pressure .3
6.2 Nominal dimensions .3
7 Shafts.4
7.1 Shaft ends .4
7.2 Diametral tolerance .5
7.3 Surface roughness and hardness .5
7.3.1 Surface roughness.5
7.3.2 Surface hardness .6
8 Housings.6
8.1 Dimensions .6
8.2 Housing bore tolerance .7
8.3 Housing bore surface roughness .7
9 Seal tolerances .7
9.1 Seal width.7
9.2 Seal outside diameter .7
10 Size identification code.8
11 Identification statement (Reference to this part of ISO 16589).9
Annex A (informative) Seal specification .10
Bibliography.13

© ISO 2011 – All rights reserved iii

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ISO 16589-1:2011(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 16589-1 was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC 7,
Sealing devices.
This second edition cancels and replaces the first edition (ISO 16589-1:2001), which has been technically
revised.
ISO 16589 consists of the following parts, under the general title Rotary shaft lip-type seals incorporating
thermoplastic sealing elements:
⎯ Part 1: Nominal dimensions and tolerances
⎯ Part 2: Vocabulary
⎯ Part 3: Storage, handling and installation
⎯ Part 4: Performance test procedures
⎯ Part 5: Identification of visual imperfections


iv © ISO 2011 – All rights reserved

---------------------- Page: 4 ----------------------
ISO 16589-1:2011(E)
Introduction
Rotary shaft lip-type seals are used to retain fluid in equipment where the differential pressure is relatively low.
Typically, the shaft rotates and the housing is stationary, although in some applications the shaft is stationary
and the housing rotates.
Dynamic sealing is normally the result of a designed interference fit between the shaft and a flexible element
incorporated in the seal.
Similarly, a designed interference fit between the outside diameter of the seal and the diameter of the housing
bore retains the seal and prevents static leakage.
Careful storage and handling and proper installation of all seals are necessary to avoid hazards, both prior to
and during installation, which would adversely affect service life.

© ISO 2011 – All rights reserved v

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INTERNATIONAL STANDARD ISO 16589-1:2011(E)

Rotary shaft lip-type seals incorporating thermoplastic sealing
elements —
Part 1:
Nominal dimensions and tolerances
1 Scope
ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds based
on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use
under low pressure conditions.
This part of ISO 16589 shows seal types and examples. It also specifies the nominal dimensions and
tolerance of the seals, shafts and housings, as well as a dimensional identification code.
NOTE ISO 16589 is complementary to ISO 6194, which covers seals incorporating elastomeric sealing elements.
2 Normative references
The following referenced documents are indispensable for the application 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.
ISO 286-2, Geometrical product specifications (GPS) — ISO code system for tolerances on linear sizes —
Part 2: Tables of standard tolerance classes and limit deviations for holes and shafts
ISO 5598, Fluid power systems and components — Vocabulary
ISO 16589-2, Rotary shaft lip-type seals incorporating thermoplastic sealing elements — Part 2: Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5598 and ISO 16589-2 apply.
4 Symbols
a housing bore depth
b nominal seal width
c housing bore chamfer length
d minor diameter at the shaft lead-in chamfer
m
D nominal diameter of the shaft to be used with the seal
1
© ISO 2011 – All rights reserved 1

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ISO 16589-1:2011(E)
D nominal diameter of the housing bore and of the outer diameter of the seal
2
r housing bore corner radius
5 Seal types and examples
5.1 Seal outside diameter construction
Figure 1 shows three basic types of seal outside diameter construction.

Type 1 Type 2 Type 3
Metal-cased Semi-rubber-covered metal-cased Rubber-covered metal-cased
NOTE Because of some variations in design details, or seals made by different manufacturers, the constructions
shown are intended only to be representative of the basic types.
Figure 1 — Three basic types of outside diameter construction
5.2 Sealing lip arrangements
Some examples of sealing lip arrangements are shown in Figure 2.

Example 1 Example 2 Example 3 Example 4
Single lip Double lip in tandem Single lip with Single lip with
thermoplastic elastomeric protection lip
protection lip
Figure 2 — Sealing lip arrangements
2 © ISO 2011 – All rights reserved

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ISO 16589-1:2011(E)
The sealing lip arrangements shown in Figure 2 can be used with each seal outside diameter construction
shown in Figure 1.
Hydrodynamic aids on the main lip may be incorporated by some manufacturers in certain applications.
The design of the sealing lip should be agreed between the manufacturer and purchaser.
NOTE Because of variations in design detail, or seals made by different manufacturers, the constructions shown are
intended only as representative examples of the basic types.
6 Pressure and nominal dimensions
6.1 Pressure
Seals of this type are normally used with atmospheric pressure on the air side, and sealing fluids at pressures
from 0 kPa to 30 kPa (0,3 bar) above atmospheric pressure. The user should consult the seal manufacturer
regarding use at other pressures.
6.2 Nominal dimensions
The nominal dimensions of the seals are shown in Figure 3 and given in Table 1.

Key
b nominal seal width
D nominal diameter of the shaft to be used with the seal
1
D nominal diameter of the housing bore and seal outside diameter
2
a
Air side.
b
Fluid side.
Figure 3 — Seal
© ISO 2011 – All rights reserved 3

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ISO 16589-1:2011(E)
Table 1 — Nominal dimensions
Dimensions in millimetres
a a a a
D D D D D D D D
b b b b
1 2 1 2 1 2 1 2
6 16 7 25 52 7 45 65 8 120 150 12
6 22 7 28 40 7 50 65 8 130 160 12
7 22 7 28 47 7 50 72 8 140 170 15
8 22 7 28 52 7 55 72 8 150 180 15
8 24 7 30 42 7 55 80 8 160 190 15
9 22 7 30 47 7 60 80 8 170 200 15
10 22 7 30 52 7 60 85 8 180 210 15
10 25 7 32 45 8 65 85 10 190 220 15
12 24 7 32 47 8 65 90 10 200 230 15
12 25 7 32 52 8 70 90 10 220 250 15
12 30 7 35 50 8 70 95 10 240 270 20
15 26 7 35 52 8 75 95 10 260 300 20
15 30 7 35 55 8 75 100 10 280 320 20
15 35 7 38 55 8 80 100 10 300 340 20
16 30 7 38 58 8 80 110 10 320 360 20
18 30 7 38 62 8 85 110 12 340 380 20
18 35 7 40 55 8 85 120 12 360 400 20
20 35 7 40 62 8 90 120 12 380 420 20
20 40 7 42 55 8 95 120 12 400 440 20
22 35 7 42 62 8 100 125 12 450 500 25
22 40 7 45 62 8 110 140 12 480 530 25
22 47 7
25 40 7
25 47 7

a
b may be increased to permit the use of more complex seal configurations.
7 Shafts
7.1 Shaft ends
The end of the shaft shall be provided with a lead-in chamfer as shown in Figure 4 and given in Table 2.
It shall be free from burrs, sharp edges and rough machining marks.
4 © ISO 2011 – All rights reserved

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ISO 16589-1:2011(E)

Key
d minor diameter at the shaft lead-in chamfer
m
D nominal diameter of the shaft to be used with the seal
1
a
Remove sharp edge.
Figure 4 — Shaft lead-in chamfer
Table 2 — Shaft lead-in chamfer
Dimensions in millimetres
Shaft diameter Shaft diameter
D d D d
1 m 1 m
max. max.
D u 10
D − 1,5 50 < D u 70 D − 4,0
1
1 1 1
10 < D u 20 D − 2,0 70 < D u 95 D − 4,5
1 1 1 1
20 < D u 30 D − 2,5 95 < D u 130 D − 5,5
1 1 1 1
30 < D u 40 D − 3,0 130 < D u 240 D − 7,0
1 1 1 1
40 < D u 50 D − 3,5 240 < D u 480 D − 11,0
1 1 1 1

Assembly tools are specified in ISO 16589-3 and should be used to ensure that the sealing lip is not damaged.
If a radius is used instead of a lead-in chamfer, its value shall be between 1,8 mm and 3,0 mm.
7.2 Diametral tolerance
The shaft shall have a diametral tolerance not greater than h11, as specified in ISO 286-2.
7.3 Surface roughness and hardness
7.3.1 Surface roughness
The seal contact surface of a ground shaft shall be finished to a surface roughness, measured in the axial
direction of between Ra 0,2 µm and Ra 0,5 µm, and between Rz 1,2 µm and Rz 3,0 µm.
Some surface finish processes will not provide roughness values that fall within the limits given in this part of
ISO 16589. Surface roughness requirements shall be determined between the manufacturer of the surface
and the seal supplier.
© ISO 2011 – All rights reserved 5

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ISO 16589-1:2011(E)
The seal contact surface shal
...

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bagues d'étanchéité à lèvres pour arbres tournants incorporant des éléments d'étanchéité thermoplastiques - Partie 1: Dimensions nominales et tolérancesRotary shaft lip-type seals incorporating thermoplastic sealing elements - Part 1: Nominal dimensions and tolerances23.100.60Filters, seals and contamination of fluidsICS:Ta slovenski standard je istoveten z:ISO 16589-1:2011oSIST ISO 16589-1:2014en,fr01-januar-2014oSIST ISO 16589-1:2014SLOVENSKI
STANDARD



oSIST ISO 16589-1:2014



Reference numberISO 16589-1:2011(E)© ISO 2011
INTERNATIONAL STANDARD ISO16589-1Second edition2011-04-15Rotary shaft lip-type seals incorporating thermoplastic sealing elements — Part 1: Nominal dimensions and tolerances Bagues d'étanchéité à lèvres pour arbres tournants incorporant des éléments d'étanchéité thermoplastiques — Partie 1: Dimensions nominales et tolérances
oSIST ISO 16589-1:2014



ISO 16589-1:2011(E)
COPYRIGHT PROTECTED DOCUMENT
©
ISO 2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 • CH-1211 Geneva 20 Tel.
+ 41 22 749 01 11 Fax
+ 41 22 749 09 47 E-mail
[e-mail] Web
www.iso.org Published in Switzerland
ii © ISO 2011 – All rights reserved
oSIST ISO 16589-1:2014



ISO 16589-1:2011(E) © ISO 2011 – All rights reserved iii Contents Page Foreword.iv Introduction.v 1 Scope.1 2 Normative references.1 3 Terms and definitions.1 4 Symbols.1 5 Seal types and examples.2 5.1 Seal outside diameter construction.2 5.2 Sealing lip arrangements.2 6 Pressure and nominal dimensions.3 6.1 Pressure.3 6.2 Nominal dimensions.3 7 Shafts.4 7.1 Shaft ends.4 7.2 Diametral tolerance.5 7.3 Surface roughness and hardness.5 7.3.1 Surface roughness.5 7.3.2 Surface hardness.6 8 Housings.6 8.1 Dimensions.6 8.2 Housing bore tolerance.7 8.3 Housing bore surface roughness.7 9 Seal tolerances.7 9.1 Seal width.7 9.2 Seal outside diameter.7 10 Size identification code.8 11 Identification statement (Reference to this part of ISO 16589).9 Annex A (informative)
Seal specification.10 Bibliography.13
oSIST ISO 16589-1:2014



ISO 16589-1:2011(E) iv © ISO 2011 – All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 16589-1 was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC 7, Sealing devices. This second edition cancels and replaces the first edition (ISO 16589-1:2001), which has been technically revised. ISO 16589 consists of the following parts, under the general title Rotary shaft lip-type seals incorporating thermoplastic sealing elements: ⎯ Part 1: Nominal dimensions and tolerances ⎯ Part 2: Vocabulary ⎯ Part 3: Storage, handling and installation ⎯ Part 4: Performance test procedures ⎯ Part 5: Identification of visual imperfections
oSIST ISO 16589-1:2014



ISO 16589-1:2011(E) © ISO 2011 – All rights reserved v Introduction Rotary shaft lip-type seals are used to retain fluid in equipment where the differential pressure is relatively low. Typically, the shaft rotates and the housing is stationary, although in some applications the shaft is stationary and the housing rotates. Dynamic sealing is normally the result of a designed interference fit between the shaft and a flexible element incorporated in the seal. Similarly, a designed interference fit between the outside diameter of the seal and the diameter of the housing bore retains the seal and prevents static leakage. Careful storage and handling and proper installation of all seals are necessary to avoid hazards, both prior to and during installation, which would adversely affect service life.
oSIST ISO 16589-1:2014



oSIST ISO 16589-1:2014



INTERNATIONAL STANDARD ISO 16589-1:2011(E) © ISO 2011 – All rights reserved 1 Rotary shaft lip-type seals incorporating thermoplastic sealing elements — Part 1: Nominal dimensions and tolerances 1 Scope ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds based on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use under low pressure conditions. This part of ISO 16589 shows seal types and examples. It also specifies the nominal dimensions and tolerance of the seals, shafts and housings, as well as a dimensional identification code. NOTE ISO 16589 is complementary to ISO 6194, which covers seals incorporating elastomeric sealing elements. 2 Normative references The following referenced documents are indispensable for the application 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. ISO 286-2, Geometrical product specifications (GPS) — ISO code system for tolerances on linear sizes — Part 2: Tables of standard tolerance classes and limit deviations for holes and shafts ISO 5598, Fluid power systems and components — Vocabulary ISO 16589-2, Rotary shaft lip-type seals incorporating thermoplastic sealing elements — Part 2: Vocabulary 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 5598 and ISO 16589-2 apply. 4 Symbols a housing bore depth b nominal seal width c housing bore chamfer length
dm minor diameter at the shaft lead-in chamfer D1 nominal diameter of the shaft to be used with the seal oSIST ISO 16589-1:2014



ISO 16589-1:2011(E) 2 © ISO 2011 – All rights reserved D2 nominal diameter of the housing bore and of the outer diameter of the seal
r housing bore corner radius 5 Seal types and examples 5.1 Seal outside diameter construction Figure 1 shows three basic types of seal outside diameter construction.
Type 1 Type 2 Type 3 Metal-cased Semi-rubber-covered metal-casedRubber-covered metal-cased NOTE Because of some variations in design details, or seals made by different manufacturers, the constructions shown are intended only to be representative of the basic types. Figure 1 — Three basic types of outside diameter construction 5.2 Sealing lip arrangements Some examples of sealing lip arrangements are shown in Figure 2.
Example 1 Example 2 Example 3 Example 4 Single lip Double lip in tandem Single lip with thermoplastic protection lip Single lip with elastomeric protection lipFigure 2 — Sealing lip arrangements oSIST ISO 16589-1:2014



ISO 16589-1:2011(E) © ISO 2011 – All rights reserved 3 The sealing lip arrangements shown in Figure 2 can be used with each seal outside diameter construction shown in Figure 1. Hydrodynamic aids on the main lip may be incorporated by some manufacturers in certain applications. The design of the sealing lip should be agreed between the manufacturer and purchaser. NOTE Because of variations in design detail, or seals made by different manufacturers, the constructions shown are intended only as representative examples of the basic types. 6 Pressure and nominal dimensions 6.1 Pressure Seals of this type are normally used with atmospheric pressure on the air side, and sealing fluids at pressures from 0 kPa to 30 kPa (0,3 bar) above atmospheric pressure. The user should consult the seal manufacturer regarding use at other pressures. 6.2 Nominal dimensions The nominal dimensions of the seals are shown in Figure 3 and given in Table 1.
Key b nominal seal width D1 nominal diameter of the shaft to be used with the seal D2 nominal diameter of the housing bore and seal outside diameter a Air side. b Fluid side. Figure 3 — Seal oSIST ISO 16589-1:2014



ISO 16589-1:2011(E) 4 © ISO 2011 – All rights reserved Table 1 — Nominal dimensions Dimensions in millimetres D1 D2 ba D1 D2 ba D1 D2 ba D1 D2 ba 6 16 7 25 52 7 45 65 8 120 150 12 6 22 7 28 40 7 50 65 8 130 160 12 7 22 7 28 47 7 50 72 8 140 170 15 8 22 7 28 52 7 55 72 8 150 180 15 8 24 7 30 42 7 55 80 8 160 190 15 9 22 7 30 47 7 60 80 8 170 200 15 10 22 7 30 52 7 60 85 8 180 210 15 10 25 7 32 45 8 65 85 10 190 220 15 12 24 7 32 47 8 65 90 10 200 230 15 12 25 7 32 52 8 70 90 10 220 250 15 12 30 7 35 50 8 70 95 10 240 270 20 15 26 7 35 52 8 75 95 10 260 300 20 15 30 7 35 55 8 75 100 10 280 320 20 15 35 7 38 55 8 80 100 10 300 340 20 16 30 7 38 58 8 80 110 10 320 360 20 18 30 7 38 62 8 85 110 12 340 380 20 18 35 7 40 55 8 85 120 12 360 400 20 20 35 7 40 62 8 90 120 12 380 420 20 20 40 7 42 55 8 95 120 12 400 440 20 22 35 7 42 62 8 100 125 12 450 500 25 22 40 7 45 62 8 110 140 12 480 530 25 22 47 7
25 40 7
25 47 7
a b may be increased to permit the use of more complex seal configurations. 7 Shafts 7.1 Shaft ends The end of the shaft shall be provided with a lead-in chamfer as shown in Figure 4 and given in Table 2. It shall be free from burrs, sharp edges and rough machining marks. oSIST ISO 16589-1:2014



ISO 16589-1:2011(E) © ISO 2011 – All rights reserved 5
Key dm minor diameter at the shaft lead-in chamfer D1 nominal diameter of the shaft to be used with the seal a Remove sharp edge. Figure 4 — Shaft lead-in chamfer Table 2 — Shaft lead-in chamfer Dimensions in millimetres Shaft diameter Shaft diameter D1 dm D1 dm
max.
max. D1 u 10 D1 − 1,5 50 < D1 u 70 D1 − 4,0 10 < D1 u 20 D1 − 2,0 70 < D1 u 95 D1 − 4,5 20 < D1 u 30 D1 − 2,5 95 < D1 u 130 D1 − 5,5 30 < D1 u 40 D1 − 3,0 130 < D1 u 240 D1 − 7,0 40 < D1 u 50 D1 − 3,5 240 < D1 u 480 D1 − 11,0
Assembly tools are specified in ISO 16589-3 and should be used to ensure that the sealing lip is not damaged. If a radius is used instead of a lead-in chamfer, its value shall be between 1,8 mm and 3,0 mm. 7.2 Diametral tolerance The shaft shall have a diametral tolerance not greater than h11, as specified in ISO 286-2. 7.3 Surface roughness and hardness 7.3.1 Surface roughness The seal contact surface of a ground shaft shall be finished to a surface roughness, measured in the axial directio
...

SLOVENSKI STANDARD
SIST ISO 16589-1:2014
01-marec-2014
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SIST ISO 16589-1:2002
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Rotary shaft lip-type seals incorporating thermoplastic sealing elements - Part 1: Nominal
dimensions and tolerances
Bagues d'étanchéité à lèvres pour arbres tournants incorporant des éléments
d'étanchéité thermoplastiques - Partie 1: Dimensions nominales et tolérances
Ta slovenski standard je istoveten z: ISO 16589-1:2011
ICS:
23.100.60 )LOWULWHVQLODLQ Filters, seals and
RQHVQDåHYDQMHWHNRþLQ contamination of fluids
SIST ISO 16589-1:2014 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST ISO 16589-1:2014

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SIST ISO 16589-1:2014

INTERNATIONAL ISO
STANDARD 16589-1
Second edition
2011-04-15

Rotary shaft lip-type seals incorporating
thermoplastic sealing elements —
Part 1:
Nominal dimensions and tolerances
Bagues d'étanchéité à lèvres pour arbres tournants incorporant des
éléments d'étanchéité thermoplastiques —
Partie 1: Dimensions nominales et tolérances




Reference number
ISO 16589-1:2011(E)
©
ISO 2011

---------------------- Page: 3 ----------------------

SIST ISO 16589-1:2014
ISO 16589-1:2011(E)

COPYRIGHT PROTECTED DOCUMENT


©  ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published in Switzerland

ii © ISO 2011 – All rights reserved

---------------------- Page: 4 ----------------------

SIST ISO 16589-1:2014
ISO 16589-1:2011(E)
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Terms and definitions .1
4 Symbols.1
5 Seal types and examples.2
5.1 Seal outside diameter construction .2
5.2 Sealing lip arrangements.2
6 Pressure and nominal dimensions.3
6.1 Pressure .3
6.2 Nominal dimensions .3
7 Shafts.4
7.1 Shaft ends .4
7.2 Diametral tolerance .5
7.3 Surface roughness and hardness .5
7.3.1 Surface roughness.5
7.3.2 Surface hardness .6
8 Housings.6
8.1 Dimensions .6
8.2 Housing bore tolerance .7
8.3 Housing bore surface roughness .7
9 Seal tolerances .7
9.1 Seal width.7
9.2 Seal outside diameter .7
10 Size identification code.8
11 Identification statement (Reference to this part of ISO 16589).9
Annex A (informative) Seal specification .10
Bibliography.13

© ISO 2011 – All rights reserved iii

---------------------- Page: 5 ----------------------

SIST ISO 16589-1:2014
ISO 16589-1:2011(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 16589-1 was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC 7,
Sealing devices.
This second edition cancels and replaces the first edition (ISO 16589-1:2001), which has been technically
revised.
ISO 16589 consists of the following parts, under the general title Rotary shaft lip-type seals incorporating
thermoplastic sealing elements:
⎯ Part 1: Nominal dimensions and tolerances
⎯ Part 2: Vocabulary
⎯ Part 3: Storage, handling and installation
⎯ Part 4: Performance test procedures
⎯ Part 5: Identification of visual imperfections


iv © ISO 2011 – All rights reserved

---------------------- Page: 6 ----------------------

SIST ISO 16589-1:2014
ISO 16589-1:2011(E)
Introduction
Rotary shaft lip-type seals are used to retain fluid in equipment where the differential pressure is relatively low.
Typically, the shaft rotates and the housing is stationary, although in some applications the shaft is stationary
and the housing rotates.
Dynamic sealing is normally the result of a designed interference fit between the shaft and a flexible element
incorporated in the seal.
Similarly, a designed interference fit between the outside diameter of the seal and the diameter of the housing
bore retains the seal and prevents static leakage.
Careful storage and handling and proper installation of all seals are necessary to avoid hazards, both prior to
and during installation, which would adversely affect service life.

© ISO 2011 – All rights reserved v

---------------------- Page: 7 ----------------------

SIST ISO 16589-1:2014

---------------------- Page: 8 ----------------------

SIST ISO 16589-1:2014
INTERNATIONAL STANDARD ISO 16589-1:2011(E)

Rotary shaft lip-type seals incorporating thermoplastic sealing
elements —
Part 1:
Nominal dimensions and tolerances
1 Scope
ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds based
on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use
under low pressure conditions.
This part of ISO 16589 shows seal types and examples. It also specifies the nominal dimensions and
tolerance of the seals, shafts and housings, as well as a dimensional identification code.
NOTE ISO 16589 is complementary to ISO 6194, which covers seals incorporating elastomeric sealing elements.
2 Normative references
The following referenced documents are indispensable for the application 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.
ISO 286-2, Geometrical product specifications (GPS) — ISO code system for tolerances on linear sizes —
Part 2: Tables of standard tolerance classes and limit deviations for holes and shafts
ISO 5598, Fluid power systems and components — Vocabulary
ISO 16589-2, Rotary shaft lip-type seals incorporating thermoplastic sealing elements — Part 2: Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5598 and ISO 16589-2 apply.
4 Symbols
a housing bore depth
b nominal seal width
c housing bore chamfer length
d minor diameter at the shaft lead-in chamfer
m
D nominal diameter of the shaft to be used with the seal
1
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SIST ISO 16589-1:2014
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D nominal diameter of the housing bore and of the outer diameter of the seal
2
r housing bore corner radius
5 Seal types and examples
5.1 Seal outside diameter construction
Figure 1 shows three basic types of seal outside diameter construction.

Type 1 Type 2 Type 3
Metal-cased Semi-rubber-covered metal-cased Rubber-covered metal-cased
NOTE Because of some variations in design details, or seals made by different manufacturers, the constructions
shown are intended only to be representative of the basic types.
Figure 1 — Three basic types of outside diameter construction
5.2 Sealing lip arrangements
Some examples of sealing lip arrangements are shown in Figure 2.

Example 1 Example 2 Example 3 Example 4
Single lip Double lip in tandem Single lip with Single lip with
thermoplastic elastomeric protection lip
protection lip
Figure 2 — Sealing lip arrangements
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SIST ISO 16589-1:2014
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The sealing lip arrangements shown in Figure 2 can be used with each seal outside diameter construction
shown in Figure 1.
Hydrodynamic aids on the main lip may be incorporated by some manufacturers in certain applications.
The design of the sealing lip should be agreed between the manufacturer and purchaser.
NOTE Because of variations in design detail, or seals made by different manufacturers, the constructions shown are
intended only as representative examples of the basic types.
6 Pressure and nominal dimensions
6.1 Pressure
Seals of this type are normally used with atmospheric pressure on the air side, and sealing fluids at pressures
from 0 kPa to 30 kPa (0,3 bar) above atmospheric pressure. The user should consult the seal manufacturer
regarding use at other pressures.
6.2 Nominal dimensions
The nominal dimensions of the seals are shown in Figure 3 and given in Table 1.

Key
b nominal seal width
D nominal diameter of the shaft to be used with the seal
1
D nominal diameter of the housing bore and seal outside diameter
2
a
Air side.
b
Fluid side.
Figure 3 — Seal
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SIST ISO 16589-1:2014
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Table 1 — Nominal dimensions
Dimensions in millimetres
a a a a
D D D D D D D D
b b b b
1 2 1 2 1 2 1 2
6 16 7 25 52 7 45 65 8 120 150 12
6 22 7 28 40 7 50 65 8 130 160 12
7 22 7 28 47 7 50 72 8 140 170 15
8 22 7 28 52 7 55 72 8 150 180 15
8 24 7 30 42 7 55 80 8 160 190 15
9 22 7 30 47 7 60 80 8 170 200 15
10 22 7 30 52 7 60 85 8 180 210 15
10 25 7 32 45 8 65 85 10 190 220 15
12 24 7 32 47 8 65 90 10 200 230 15
12 25 7 32 52 8 70 90 10 220 250 15
12 30 7 35 50 8 70 95 10 240 270 20
15 26 7 35 52 8 75 95 10 260 300 20
15 30 7 35 55 8 75 100 10 280 320 20
15 35 7 38 55 8 80 100 10 300 340 20
16 30 7 38 58 8 80 110 10 320 360 20
18 30 7 38 62 8 85 110 12 340 380 20
18 35 7 40 55 8 85 120 12 360 400 20
20 35 7 40 62 8 90 120 12 380 420 20
20 40 7 42 55 8 95 120 12 400 440 20
22 35 7 42 62 8 100 125 12 450 500 25
22 40 7 45 62 8 110 140 12 480 530 25
22 47 7
25 40 7
25 47 7

a
b may be increased to permit the use of more complex seal configurations.
7 Shafts
7.1 Shaft ends
The end of the shaft shall be provided with a lead-in chamfer as shown in Figure 4 and given in Table 2.
It shall be free from burrs, sharp edges and rough machining marks.
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SIST ISO 16589-1:2014
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Key
d minor diameter at the shaft lead-in chamfer
m
D nominal diameter of the shaft to be used with the seal
1
a
Remove sharp edge.
Figure 4 — Shaft lead-in chamfer
Table 2 — Shaft lead-in chamfer
Dimensions in millimetres
Shaft diameter Shaft diameter
D d D d
1 m 1 m
max. max.
D u 10
D − 1,5 50 < D u 70 D − 4,0
1
1 1 1
10 < D u 20 D − 2,0 70 < D u 95 D − 4,5
1 1 1 1
20 < D u 30 D − 2,5 95 < D u 130 D − 5,5
1 1 1 1
30 < D u 40 D − 3,0 130 < D u 240 D − 7,0
1 1 1 1
40 < D u 50 D − 3,5 240 < D u 480 D − 11,0
1 1 1 1

Assembly tools are specified in ISO 16589-3 and should be used to ensure that the sealing lip is not damaged.
If a radius is used instead of a lead-in chamfer, its value shall be between 1,8 mm and 3,0 mm.
7.2 Diametral tolerance
The shaft shall have a diametral tolerance not greater than h11, as specified in ISO 286-2.
7.3 Surface roughness and hardness
...