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 978-0-626-22951-1 SANS 206:2009Edition 2ISO 6119:2006Edition 2SOUTH AFRICAN NATIONAL STANDARD Road vehicles Elastomeric seals for hydraulic disc bra
4、ke cylinders using a non-petroleum base hydraulic brake fluid (Service temperature 120 C max.) This national standard is the identical implementation of ISO 6119:2006 and is adopted with the permission of the International Organization for Standardization. Published by SABS Standards Division 1 Dr L
5、ategan Road Groenkloof Private Bag X191 Pretoria 0001Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 206:2009 Edition 2 ISO 6119:2006 Edition 2 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee SABS TC 45, Rubbe
6、r 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 October 2009. This SANS document supersedes SANS 206:2003 (edition 1). Reference numberISO 6119:2006(E)ISO 2006INTERNATIONAL S
7、TANDARD ISO6119Second edition2006-08-01Road vehicles Elastomeric seals for hydraulic disc brake cylinders using a non-petroleum base hydraulic brake fluid (Service temperature 120 C max.) Vhicules routiers Joints en caoutchouc pour cylindres de freins hydrauliques disque utilisant un liquide de frei
8、n base non ptrolire (Temprature maximale dutilisation: 120 C) SANS 206:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 6119:2006(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing polic
9、y, 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 accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central S
10、ecretariat 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 file; the PDF-creation parameters were optimized for printing. Every care has been taken to
11、 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 2006 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or u
12、tilized 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 requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 F
13、ax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2006 All rights reservedSANS 206:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 6119:2006(E) ISO 2006 All rights reserved iiiContents Page F
14、oreword iv 1 Scope . 1 2 Normative references . 1 3 Product requirements. 1 4 Brake test fluid 1 5 Apparatus 2 5.1 Apparatus for test of resistance to fluid at elevated temperature, physical stability and precipitation characteristics 2 5.2 Apparatus for high-temperature strocking test (see Figure 1
15、) . 2 5.3 Apparatus for low-temperature leakage test (see Figure 2) 3 6 Test requirements. 3 7 Preparation of test specimens 4 8 Resistance to fluid at elevated temperature Physical stability . 4 8.1 Test specimens . 4 8.2 Test procedure 4 9 Resistance to fluid at elevated temperature Precipitation
16、characteristics 5 9.1 Test specimens . 5 9.2 Test procedure 5 10 Resistance to elevated temperature in dry air.6 10.1 Test specimens . 6 10.2 Test procedure 6 11 Ambient-temperature stroking test. 6 11.1 Test specimens . 6 11.2 Test procedure 6 12 High-temperature stroking test . 7 12.1 Test specime
17、ns . 7 12.2 Test procedure 7 13 Low-temperature leakage test . 8 13.1 Test specimens . 8 13.2 Test procedure 8 13.3 Bend test procedure. 9 14 Cycling humidity storage corrosion test 9 14.1 Test specimens . 9 14.2 Test procedure 9 SANS 206:2009This s tandard may only be used and printed by approved s
18、ubscription and freemailing clients of the SABS .ISO 6119:2006(E) iv ISO 2006 All rights reservedForeword 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 car
19、ried 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.
20、 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 Interna
21、tional 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
22、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 6119 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 2, Braking systems and equipment. This second edition cancels and rep
23、laces the first edition (ISO 6119:1980), which has been technically revised. SANS 206:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .INTERNATIONAL STANDARD ISO 6119:2006(E) ISO 2006 All rights reserved 1Road vehicles Elastomeric seals fo
24、r hydraulic disc brake cylinders using a non-petroleum base hydraulic brake fluid (Service temperature 120 C max.) 1 Scope This International Standard specifies the performance test methods and requirements for elastomeric seals used in road vehicle disc brake cylinders. It is applicable to solid se
25、ction type seals (square, rectangular, “O”-ring), mounted stationary in the cylinder bore or on the movable piston of disc brakes. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. F
26、or undated references, the latest edition of the referenced document (including any amendments) applies. ISO 48, Rubber, vulcanized or thermoplastic Determination of hardness (hardness between 10 IRHD and 100 IRHD ISO 188, Rubber, vulcanized or thermoplastic Accelerated ageing and heat resistance te
27、sts ISO 1817, Rubber, vulcanized Determination of the effect of liquids ISO 4926, Road vehicles Hydraulic brake systems Non-petroleum base reference fluids ISO 4928, Road vehicles Elastomeric cups and seals for cylinders for hydraulic braking systems using a non-petroleum base hydraulic brake fluid
28、(Service temperature 120 C max.) 3 Product requirements Seals shall conform to the pertinent drawing in all respects and shall be free from blisters, pin-holes, cracks, protuberances, embedded foreign material, or other physical defects which can be detected by thorough inspection. These elastomeric
29、 seals shall be suitable for operation in a temperature range of 40 C to +120 C. 4 Brake test fluid The test fluid for all tests except the test prescribed in Clause 14 shall be compatibility fluid as defined in ISO 4926. The fluid specified in Clause 14 shall be ISO fluid for storage corrosion test
30、 as defined in ISO 4926, or the fluid agreed by the parties concerned. SANS 206:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 6119:2006(E) 2 ISO 2006 All rights reserved5 Apparatus 5.1 Apparatus for test of resistance to fluid at el
31、evated temperature, physical stability and precipitation characteristics 5.1.1 Oven, uniformly heated, dry air type conforming to the requirements of ISO 188. 5.1.2 Test jar, screw-top straight-sided round glass type, having a capacity of approximately 250 ml and inner dimensions of approximately 12
32、5 mm height and 50 mm diameter, with a tinned steel lid (no insert or organic coating). 5.2 Apparatus for high-temperature strocking test (see Figure 1) 5.2.1 Pneumatic or hydraulic pressure source. 5.2.2 Master cylinder. 5.2.3 Pressure gauge. 5.2.4 Wheel cylinder seat stroking fixture. 5.2.6 Cylind
33、er assembly. 5.2.7 Oven, in accordance with 5.1.1. Key 1 pneumatic or hydraulic pressure source 2 master cylinder 3 pressure gauge 4 wheel cylinder seat stroking fixture 5 oven chamber at +120 C 6 cylinder assembly Figure 1 High-temperature strocking test SANS 206:2009This s tandard may only be used
34、 and printed by approved subscription and freemailing clients of the SABS .ISO 6119:2006(E) ISO 2006 All rights reserved 35.3 Apparatus for low-temperature leakage test (see Figure 2) 5.3.1 Hydraulic pressure gauge. 5.3.2 Master cylinder. 5.3.3 Cylinder assembly. 5.3.4 Cold chamber, at 40 C. Dimensi
35、ons in millimetres Key 1 hydraulic pressure gauge 2 master cylinder 3 cylinder assembly 4 cold chamber at 40 C Figure 2 Low-temperature leakage test 6 Test requirements 6.1 After the test for resistance to fluid at elevated temperature (physical stability) (see Clause 8), the seals shall conform to
36、the following requirements: a) any change in volume shall be within 0 % to +15 %; b) any change in hardness shall be within 0 IRHD to 15 IRHD. 6.2 After the test for resistance to fluid at elevated temperature (precipitation characteristics) (see Clause 9), not more than 0,3 % sediment by volume sha
37、ll be formed in the test fluid used. SANS 206:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 6119:2006(E) 4 ISO 2006 All rights reserved6.3 After the test for resistance to elevated temperature in dry air (see Clause 10), the seals s
38、hall conform to the following requirements: a) any change in hardness shall be within 0 IRHD to +15 IRHD; b) test specimens shall show no evidence of blistering, cracking or change in shape from original form. 6.4 After the ambient-temperature stroking test (see Clause 11), seals and assembly shall
39、conform to the following requirements: a) no leakage beyond normal wetting of the bore(s) shall occur during the stroking test; b) no leakage beyond normal wetting of the bore(s) shall occur during the static leak test (see 11.2.3). 6.5 After the high-temperature stroking test (see Clause 12), the s
40、eals and assembly shall conform to the following requirements: a) no leakage beyond normal wetting of the bore(s) shall occur during the stroking test; b) no leakage beyond normal wetting of the bore(s) shall occur during the static leak test (see 12.2.4). 6.6 After the low-temperature leakage test
41、(see Clause 13), the seals and assembly shall conform to the following requirements: a) no leakage beyond normal wetting of the bore(s) shall occur during the test period or pressure application; b) the seal shall not crack, shall remain flexible and shall return to its approximate original shape wi
42、thin 1 min when tested according to the procedure given in 13.3. 6.7 After the cycling humidity storage corrosion test (Clause 14), the seals and assembly shall conform to the following requirements: a) no evidence of rubber adhesion of the test seal(s) shall appear during disassembly of the test br
43、ake; b) no surface of the sealing systems shall show evidence of corrosion or deterioration which would interfere with proper sealing action; normal staining or discoloration of metal parts is acceptable if the surface finish is unaffected. 6.8 After all the tests, disassemble the cylinder and inspe
44、ct the seal. Record the visual condition of the seal bore and piston. Seals shall not show excessive deterioration such as scoring, scuffing, blistering, cracking or change in shape from original appearance. 7 Preparation of test specimens All seals to be tested shall be cleaned prior to testing by
45、rinsing in isopropanol then blown dry or wiped dry with a lint-free cloth. Seals shall not remain in the alcohol for more than 30 s. 8 Resistance to fluid at elevated temperature Physical stability 8.1 Test specimens From three or more seals to be tested, obtain a sample of mass 3 g to 5 g. 8.2 Test
46、 procedure 8.2.1 Determine and record the initial volume of the sample in accordance with ISO 1817. SANS 206:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 6119:2006(E) ISO 2006 All rights reserved 58.2.2 Determine and record the ini
47、tial hardness of the sample in IRHD. Measure the hardness as specified in ISO 48 using a microtester (or according to a procedure previously agreed upon between the vendor and purchaser). 8.2.3 Place the sample in the test jar (5.1.2) and completely immerse in 75 ml of brake test fluid (see Clause 4
48、). Seal the test jar to prevent vapour loss and place in the oven (5.1.1) at 120 C 2 C for 70 h. 8.2.4 After the 70 h, remove the sample from the oven and allow it to cool in the container at 23 C 5 C for 60 min to 90 min. At the end of the cooling period, remove the sample from the container and ri
49、nse it in isopropanol or ethanol then wipe dry with a clean, lint-free cloth. Do not allow the sample to remain in the alcohol for more than 30 s. 8.2.5 Within 60 min of removal from the liquid, determine and record the final volume and hardness, in IRHD, of each seal in accordance with 8.2.1 and 8.2.2. Average the results and report as the change in volume and hardness. 8.2.6 Report the change in volume V as a percentage of the original volume. It is given by the formula V = ()( )()34 12
