ISO TECHNICAL REPORT TR 11340 First edition 1994-07-01 Rubber and rubber products Hydraulic hose assemblies -- External leakage classification for hydraulic systems Caoutchouc et produits en caoutchouc - Flexibles hydrauliques Classification des fuites externes des installations hydrauliques ISO Reference number ISO/TR11340:1994(E) Not for Resale ISO/TR11340:1994(E) Foreword ISO (the International Organization for Standardization) is a worldwide of preparing International Standards is normally carried out through Iso which a technical committee has been established has the right to be re- presented 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 main task of technical committees is to prepare International Stan- pose the publication of a Technical Report of one of the following types: type 1, when the required support cannot be obtained for the publica- tion of an International Standard, despite repeated efforts; type 2, when the subject is still under technical development or where for any other reason there is the future but not immediate possibility of an agreement on an International Standard; type 3, when a technical committee has collected data of a different kind from that which is normally published as an International Standard ("state of the art", for example). Technical Reports of types 1 and 2 are subject to review within three years of publication, to decide whether they can be transformed into Interna- tional Standards. Technical Reports of type 3 do not necessarily have to valid oruseful. ISO/TR 11340, which is a Technical Report of type 3, was prepared by Technical CommitteeISO/TC45.Rubberandrubberproducts,Subcom- mittee SC 1, Hoses (rubber and plastics). The reasons why this document has been published as a type 3 Technical Report are given in the introduction 0 ISO1994 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 the publisher. International Organization for Standardization CasePostale56·CH-1211Geneve20·Switzerland Printed in Switzerland i Copyright International Organization for Standardization without license from IHS Not for Resale CISO ISO/TR11340:1994(E) Introduction The subject of an external leakage classification for hydraulic hoses was products Hoses (rubber and plastics)" in September 1990. Earlier, at its that such work did not, of itself, form the basis of a standard, but wouid act as useful guidance if published as a Type 3 Technical Report. March 1991. This received 14 votes of approval with no disapproval votes. Comments were discussed the 1991 meeting of ISO/TC 45/SC 1/WG 3, where it was agreed that a text with minor modi- Report. (Resolution 2212, document 45 N 5968.) The draft Technical Report was issued for ballot in ISO/TC 45/SC 1 in July 1992. It received 17 votes of approval with no disapproval votes and at the 1992 meeting of ISO/TC 45/SC 1/WG 3 it was agreed that it should be published as aTechnical Report. (Resolution 2286-7,document 45 N 6027.) ili CopyrightInemationarganizatinStandardzation No reproduction or networking permited without license from IHS Not for Resale