1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-21750-1 SANS 4633:2008 Edition 1 ISO 4633:2002 Edition 3SOUTH AFRICAN NATIONAL STANDARD Rubber seals Joint rings for water supply, drainag
4、e and sewerage pipelines Specification for materials This national standard is the identical implementation of ISO 4633:2002 (corrected version:2004) and is adopted with the permission of the International Organization for Standardization. Published by SABS Standards Division 1 Dr Lategan Road Groen
5、kloof Private Bag X191 Pretoria 0001 Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS This standard may only be used and printed by approved subscription and freemailing clients of the SABS.SANS 4633:2008 Edition 1 ISO 4633:2002 Edition 3 Table of changes Change No. Date Scope National
6、foreword This South African standard was approved by National Committee SABS TC 45, Rubber and rubber products, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in September 2008. This standard may onl
7、y be used and printed by approved subscription and freemailing clients of the SABS. Reference number ISO 4633:2002(E) ISO 2002INTERNATIONAL STANDARD ISO 4633 Third edition 2002-04-15 Corrected version 2004-04-01 Rubber seals Joint rings for water supply, drainage and sewerage pipelines Specification
8、 for materials Joints tanches en caoutchouc Garnitures de joints de canalisations dadduction et dvacuation deau (gouts inclus) Spcification des matriaux SANS 4633:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 4633:2002(E) PDF disclaim
9、er This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties acce
10、pt therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the f
11、ile; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2002 All right
12、s 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 ISOs member body in the country of the
13、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 copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO 2002 All rights reservedSANS 4633:2008This standard may only be used and printed by approved subscription and freemailing
14、 clients of the SABS.ISO 4633:2002(E) ISO 2002 All rights reserved iiiContents Page Foreword.iv 1 Scope1 2 Normative references1 3 Classification.2 4 Requirements.2 5 Test pieces and test temperature 7 6 Quality assurance7 7 Storage7 8 Designation7 9 Marking and labelling8 Annex A (normative) Determ
15、ination of splice strength 9 Annex B (informative) Quality assurance .10 Annex C (informative) Guidance on storage of seals11 Bibliography12 SANS 4633:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 4633:2002(E) iv ISO 2002 All rights r
16、eservedForeword 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 wh
17、ich 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
18、matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are ci
19、rculated 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 International Standard may be the subject of patent rights. ISO shall not
20、 be held responsible for identifying any or all such patent rights. ISO 4633 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 4, Products (other than hoses). This third edition cancels and replaces the second edition (ISO 4633:1996), which has been technical
21、ly revised. Annex A forms a normative part of this International Standard. Annexes B and C are for information only. This corrected version of ISO 4633:2002 incorporates the following corrections: Page 5, Subclause 4.2.9 (ozone resistance): the exposure time has been corrected from 0 2 (72 ) h to 0
22、2 (48 ) h. Page 12, Bibliography: 1) the year of publication of ISO 2230 has been inserted and the footnote deleted; 2) the year of publication of ISO 7743 has been updated. NOTE At the time of publication of this corrected version, a new edition of ISO 6914:1985 (see Clause 2 and 4.2.7, last paragr
23、aph) was about to be published. SANS 4633:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.INTERNATIONAL STANDARD ISO 4633:2002(E) ISO 2002 All rights reserved 1Rubber seals Joint rings for water supply, drainage and sewerage pipelines Speci
24、fication for materials WARNING Persons using this International Standard should be familiar with normal laboratory practice. This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and
25、 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 a) cold drinking-water supplies (up to 50 C); b) drainage, sewerage and rainwater systems (continuous flow
26、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 additional requirements called for by the particular applicat
27、ion 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 where appropriate with product standards which specify p
28、erformance 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 applicable to elastomeric components of composite or non-co
29、mposite 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 sealing function or in the long-term stability of the seal. Joi
30、nt 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 normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated ref
31、erences, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated r
32、eferences, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 37:1994, Rubber, vulcanized or thermoplastic Determination of tensile stress-strain properties ISO 48:1994, Rubber, vulcanized or the
33、rmoplastic Determination of hardness (hardness between 10 IRHD and 100 IRHD) SANS 4633:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 4633:2002(E) 2 ISO 2002 All rights reservedISO 188:1998, Rubber, vulcanized or thermoplastic Accelera
34、ted ageing and heat resistance tests ISO 815:1991, Rubber, vulcanized or thermoplastic Determination of compression set at ambient, elevated or low temperatures ISO 1431-1:1989, Rubber, vulcanized or thermoplastic Resistance to ozone cracking Part 1: Static strain test ISO 1629:1995, Rubber and lati
35、ces Nomenclature ISO 1817:1999, Rubber, vulcanized Determination of the effect of liquids ISO 2285:2001, Rubber, vulcanized or thermoplastic Determination of tension set under constant elongation, and of tension set, elongation and creep under constant tensile load ISO 3302-1:1996, Rubber Tolerances
36、 for products Part 1: Dimensional tolerances ISO 3384:1999, Rubber, vulcanized or thermoplastic Determination of stress relaxation in compression at ambient and at elevated temperatures ISO 3387:1994, Rubbers Determination of crystallization effects by hardness measurements ISO 4661-1:1993, Rubber,
37、vulcanized or thermoplastic Preparation of samples and test pieces Part 1: Physical tests ISO 6914:1985, Rubber, vulcanized Determination of ageing characteristics by measurement of stress at a given elongation ISO 9691:1992, Rubber Recommendations for the workmanship of pipe joint rings Description
38、 and classification of imperfections 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. 4 Requirements 4.1 Requirements for materials 4.1.1 General The ma
39、terials shall be free of any substances which may have a deleterious effect on the fluid being conveyed, or on the life of the sealing ring, or on the pipe or fitting. Elastomeric components of composite seals not exposed to the contents of the pipeline are not required to meet the requirements of 4
40、.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 materials shall comply with the national requirements in the country of use. 4.1.3 Microbiological deterioration The materials shall be resistant
41、to microbiological deterioration if the application so requires. The test methods and the requirements shall be as specified in national standards. SANS 4633:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 4633:2002(E) ISO 2002 All righ
42、ts reserved 34.2 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. Classification of imperfecti
43、ons shall be in accordance with ISO 9691, as follows: surface imperfections in zones involved in the sealing function, as described in 4.1.1 of ISO 9691:1992, shall be considered as defects; surface imperfections in zones not involved in the sealing function, as described in 4.1.2.1 b) of ISO 9691:1
44、992, shall not be considered as defects. Major surface imperfections in zones not involved in the sealing function, as described in 4.1.2.1 a) of ISO 9691:1992, could be considered as defects. This shall be agreed between the interested parties: the acceptance criteria depend upon the seal type or d
45、esign. Internal imperfections as described in 4.2 of ISO 9691:1992 could be considered as defects. The compressive force referred to in ISO 9691:1992 can be determined in accordance with ISO 7743 (see the bibliography). The acceptable limiting values of the compressive force shall be agreed between
46、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 in IS
47、O 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 the spe
48、cified 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 dumb-b
49、ell 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 direction 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, at 23 C and 70 C, using the small, type B, tes
