ISO INTERNATIONAL STANDARD 6120 Second edition 1995-02-01 Corrected and reprinted 1997-10-01 Road vehicles -- Brake hose assemblies for hydraulic braking systems used with petroleum-base brake fluid Vehicules routiers - Flexibles pour dispositifs de freinage hydraulique utilisant un liquide defreina base pétroliere ISO Reference number ISO 6120:1995(E) Copyright Intermational Organization for Standardization cense with IS rmitted without license from IHS Not for Resale ISO 6120:1995(E) Contents Page 1 Scope 2 Normative references 3 Definitions 4 Construction 4.1 Hose 4.2 Hose assembly 2 5 Performance testing for acceptance 2 6 Tests 6.1 Test conditions 2 6.2 Hydrostatic pressure test 3 6.3 Constriction test 3 6.4 Expansiontest 3 6.5 Burst strength test 6 6.6 Brake fluid compatibility 6 6.7 Whip test 8 6.8 Tensile strength test 8 6.9 Water absorption test 10 6.10 Cold bend test 10 6.11 Ozone resistance test under dynamic conditions 10 6.12 Hot impulse strength test 10 6.13 Salt spray test 11 7 Identification and marking 12 7.1 Brake hose 12 7.2 Brake hose assembly 13 @ISO1995 All rights reserved. Unless otherwise specified,no part of this publication may be reproduced microfilm,without permission in writing fromthepublisher. International Organization for Standardization Case Postale 56:CH-1211Geneve 20·Switzerland Printed in Switzerland C ISO ISO 6120:1995(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. Draft tnternational Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International a vote. International Standard iSO 6120 was prepared by Technical Committee ISO/TC22, Road vehicles, Subcommittee SC 2, Brake systems and equipment. of whichitconstitutesatechnicalrevision. ili license from IHS Not for Resale