ISO INTERNATIONAL STANDARD 6621-5 Fourth edition 2020-01 Internal combustion engines Piston rings - Part 5: Quality requirements Moteurs a combustion interne - Segments de piston - Partie 5: Exigences de qualite Reference number ISO 6621-5:2020(E) ISO @ISO2020 IS0 6621-5:2020(E) COPYRIGHTPROTECTEDDOCUMENT @ ISO 2020 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting below or Iso's member body in the country of the requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 0111 Fax: +41 22 749 09 47 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii @ IS0 2020 - All rights reserved