1、 ISO 2015 Rubber seals Joint rings for water supply, drainage and sewerage pipelines Specification for materials Joints tanches en caoutchouc Garnitures de joints de canalisations dadduction et dvacuation deau (gouts inclus) Spcification des matriaux INTERNATIONAL STANDARD ISO 4633 Fourth edition 20
2、15-06-01 Reference number ISO 4633:2015(E) ISO 4633:2015(E)ii ISO 2015 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means,
3、 electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-121
4、4 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.org ISO 4633:2015(E)Foreword iv 1 Scope . 1 2 Normative references 1 3 Classification 2 4 Requirements 2 4.1 Requirements for materials . 2 4.1.1 General 2 4.1.2 Effect on water quality 2 4.1.3 Microbi
5、ological deterioration . 2 4.2 Requirements for finished seals . 3 4.2.1 Dimensional tolerances 3 4.2.2 Imperfections and defects . 3 4.2.3 Hardness . 3 4.2.4 Tensile strength and elongation at break . 3 4.2.5 Compression set in air 3 4.2.6 Accelerated ageing in air . 4 4.2.7 Stress relaxation in co
6、mpression . 4 4.2.8 Volume change in water 4 4.2.9 Ozone resistance 5 4.2.10 Splices of prevulcanized profile ends 5 4.3 Optional requirements . 5 5 Test pieces and test temperature 6 5.1 Preparation of test pieces 6 5.2 Test temperature . 7 6 Quality assurance 7 7 Storage 7 8 Designation 7 9 Markin
7、g and labelling . 8 Annex A (normative) Determination of splice strength . 9 Annex B (informative) Quality assurance.10 Annex C (informative) Guidance on storage of seals .11 Bibliography .12 ISO 2015 All rights reserved iii Contents Page ISO 4633:2015(E) Foreword ISO (the International Organization
8、 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
9、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. The pr
10、ocedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the edito
11、rial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). 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. Details of any patent righ
12、ts identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an exp
13、lanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information. The committee responsible for this d
14、ocument is ISO/TC 45, Rubber and rubber products, Subcommittee SC 4, Products (other than hoses). This fourth edition cancels and replaces the third edition (ISO 4633:2002), which has been technically revised.iv ISO 2015 All rights reserved Rubber seals Joint rings for water supply, drainage and sew
15、erage pipelines Specification for materials WARNING Persons using this International Standard should be familiar with normal laboratory practice. This International Standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user
16、to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions. 1 Scope This International Standard specifies requirements for materials used in vulcanized rubber seals for the following: a) cold drinking-water supplies (up to 50 C); b) drainage
17、 sewerage, and rainwater systems (continuous flow up to 45 C and intermittent flow up to 95 C). The different designations of seals specified are defined according to their type, application, and requirements (see Table 3). General requirements for finished joint seals are also given; any additiona
18、l requirements called for by the particular application are specified in the relevant product standards, taking into account that the performance of pipe joints is a function of the seal material properties, seal geometry, and pipe joint design. This International Standard is intended to be used, wh
19、ere appropriate, with product standards which specify performance requirements for joints. This International Standard is applicable to joint seals for all pipeline materials, including iron, steel, clay, fibre cement, concrete, reinforced concrete, plastics, and glass-reinforced plastics. It is app
20、licable to elastomeric components of composite or non-composite seals. In the case of composite seals for materials of hardness ranges from 76 IRHD to 95 IRHD, the requirements for elongation at break, compression set, and stress relaxation apply only when the material is participating in the sealin
21、g function or in the long term stability of the seal. Joint seals made with an enclosed void as part of their design are included in the scope of this International Standard. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indi
22、spensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 37, Rubber, vulcanized or thermoplastic Determination of tensile stress-strain properties ISO 48, Rubber,
23、 vulcanized or thermoplastic Determination of hardness (hardness between 10 IRHD and 100 IRHD) ISO 188, Rubber, vulcanized or thermoplastic Accelerated ageing and heat resistance tests ISO 815-1, Rubber, vulcanized or thermoplastic Determination of compression set Part 1: At ambient or elevated temp
24、eratures ISO 815-2, Rubber, vulcanized or thermoplastic Determination of compression set Part 2: At low temperatures INTERNATIONAL ST ANDARD ISO 4633:2015(E) ISO 2015 All rights reserved 1 ISO 4633:2015(E) ISO 1431-1, Rubber, vulcanized or thermoplastic Resistance to ozone cracking Part 1: Static an
25、d dynamic strain testing ISO 1817, Rubber, vulcanized or thermoplastic Determination of the effect of liquids ISO 2285, Rubber, vulcanized or thermoplastic Determination of tension set under constant elongation, and of tension set, elongation and creep under constant tensile load ISO 3302-1, Rubber
26、Tolerances for products Part 1: Dimensional tolerances ISO 3384-1:2011, Rubber, vulcanized or thermoplastic Determination of stress relaxation in compression Part 1: Testing at constant temperature ISO 3387, Rubber Determination of crystallization effects by hardness measurements ISO 6914, Rubber, v
27、ulcanized or thermoplastic Determination of ageing characteristics by measurement of stress relaxation in tension ISO 9691:1992, Rubber Recommendations for the workmanship of pipe joint rings Description and classification of imperfections ISO 23529, Rubber General procedures for preparing and condi
28、tioning test pieces for physical test methods 3 Classification Six classes of material for pipe joint seals are specified in Table 2 and three classes of material in Table 3. A nominal hardness shall be specified within the ranges in Table 1. Table 1 Hardness classification Hardness range 40 50 60 7
29、0 80 90 Range of hardness, IRHD 36 to 45 46 to 55 56 to 65 66 to 75 76 to 85 86 to 95 4 Requirements 4.1 Requirements for materials 4.1.1 General The materials shall be free of any substances which can have a deleterious effect on the fluid being conveyed, the life of the sealing ring, the pipe, or
30、the fitting. Elastomeric components of composite seals not exposed to the contents of the pipeline are not required to meet the requirements of 4.1.2. 4.1.2 Effect on water quality For cold-water applications, the materials shall not impair the quality of the water under the conditions of use. The m
31、aterials shall comply with the national requirements in the country of use. 4.1.3 Microbiological deterioration The materials shall be resistant to microbiological deterioration if the application so requires. The test methods and the requirements shall be as specified in national standards.2 ISO 20
32、15 All rights reserved ISO 4633:2015(E) 4.2 Requirements for finished seals 4.2.1 Dimensional tolerances Tolerances shall be specified from the appropriate classes in ISO 3302-1. 4.2.2 Imperfections and defects The seals shall be free of defects or irregularities which could affect their function. C
33、lassification of imperfections shall be in accordance with ISO 9691, as follows: surface imperfections in zones involved in the sealing function, as described in ISO 9691:1992, 4.1.1, shall be considered as defects; surface imperfections in zones not involved in the sealing function, as described in
34、 ISO 9691:1992, 4.1.2.1 b), shall not be considered as defects. Major surface imperfections in zones not involved in the sealing function, as described in ISO 9691:1992, 4.1.2.1 a), could be considered as defects. This shall be agreed upon between the interested parties, the acceptance criteria depe
35、nd upon the seal type or design. Internal imperfections as described in ISO 9691:1992, 4.2 could be considered as defects. The compressive force referred to in ISO 9691:1992 can be determined in accordance with ISO 7743. The acceptable limiting values of the compressive force shall be agreed upon be
36、tween the interested parties. These values depend upon the seal type or design. 4.2.3 Hardness When determined by the micro-test method specified in ISO 48, the hardness shall comply with the requirements given in Table 2. If the dimensions of a seal are appropriate, the normal test method specified
37、 in ISO 48 may be used provided that the micro-test method is used for reference purposes. For the same seal, or along the greatest length of an extruded profile cut to make the seal, the difference between the minimum and maximum hardness shall not be more than 5 IRHD. Each value shall be within th
38、e specified tolerances. 4.2.4 Tensile strength and elongation at break The tensile strength and elongation at break shall be determined by the method specified in ISO 37. Dumb-bell-shaped test pieces of type 1, 2, 3, or 4 shall be used. Type 2 is the preferred type. The test report shall state the d
39、umb-bell type whenever type 2 is not used. The tensile strength and the elongation at break shall comply with the requirements given in Table 2. 4.2.5 Compression set in air 4.2.5.1 General If the test piece is taken from a seal, then the measurement shall be carried out as far as possible in the di
40、rection of compression of the seal in service. 4.2.5.2 Compression set at 23 C and 70 C When determined by the method specified in ISO 815-1 at 23 C and 70 C using the small, type B, test piece, the compression set shall comply with the requirements given in Table 2. ISO 2015 All rights reserved 3 I
41、SO 4633:2015(E) Where the cross-section is too small to obtain compression buttons from the product as an alternative to moulding buttons, the tension set of the product may be determined using ISO 2285, method A, with a strain of 50 %, and applying the same test conditions (except strain) and requi
42、rements as for compression set. 4.2.5.3 Low-temperature compression set at 10 C When determined by the method specified in ISO 815-2 at 10 C, using the small, type B, test piece and the (30 3) min recovery measurement, the low-temperature compression set shall comply with the requirements given in T
43、able 2. 4.2.6 Accelerated ageing in air Test pieces prepared for the determination of hardness (see 4.2.3) and for the determination of tensile strength and elongation at break (see 4.2.4) shall be aged in air, by the normal oven method specified in ISO 188 (method A) for 7 days at 70 C. The changes
44、 in hardness, tensile strength, and elongation at break shall comply with the requirements given in Table 2. 4.2.7 Stress relaxation in compression The stress relaxation shall be determined by method A of ISO 3384-1:2011, using the cylindrical test piece after carrying out thermal and mechanical con
45、ditioning. Measurements shall be taken after 3 h, 1 day, 3 days, and 7 days for the 7-day test and after 3 h, 1 day, 3 days, 7 days, 30 days, and 100 days for the 100-day test. The best-fit straight line shall be determined by regression analysis using a logarithmic time scale and the correlation co
46、efficients derived from these analyses shall not be lower than 0,93 for the 7-day test and 0,83 for the 100-day test. The 7-day and 100-day requirements in Table 2 are those derived from these straight lines. For continuous measurement, using the apparatus described in the first paragraph of ISO 338
47、4-1:2011, 5.2, the 7-day and 100-day requirements in Table 2 are those derived from the measurements at 7 days and 100 days. The stress relaxation in compression shall comply with the requirements given in Table 2 at the following temperatures and times: 7 days at (23 2) C; 100 days at (23 2) C. The
48、 test temperature shall be maintained within the specified tolerance during the whole period of the test and verified by suitable recording equipment on a continuous basis. The 100-day test shall be considered as a type approval test. Where the cross-section is too small to obtain compression button
49、s from the product, as an alternative to moulding test pieces, the stress relaxation in tension of the product may be determined using ISO 6914, method A with the same requirements as for stress relaxation in compression. 4.2.8 Volume change in water When determined by the method specified in ISO 1817 after 7 days of immersion in distilled or deionized water at 70 C, the change in volume shall comply with the requirements given in Table 2.4 ISO 2015 All rights reserve
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