ISO. Second edition. Corrected version. Fluid power systems — O-rings —. Part 3: Quality acceptance criteria. Transmissions. Norm DIN ISO defines permissible shape and surface deviations in O- rings. Permissible tolerances are classified into grade levels. Grade N O-rings are. ISO FLUID POWER SYSTEMS – O-RINGS – PART 3: QUALITY ACCEPTANCE CRITERIA.

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BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Suitability of elastomeric materials for industrial applications Isl following parts are in preparation: It is the constant aim of BSI to improve the quality of our products and services.

ISO shall not be held responsible 3601- identifying any or all such patent rights. Grade N O-rings are used in general applications and satisfy the high demands on dynamic and static sealing.

ISO 3601-03:2005

For dated references, only the edition cited applies. The work of preparing International Standards is normally carried out through ISO technical committees.

Each 36011-3 body interested in a subject for which a technical committee has been established has the right to be represented on that committee. Testing of components to meet performance requirement provides users a basis of assurance for determining design application and for checking component compliance with their stated requirements.

Standards and sizes

All dimensions in mm. Users are responsible for its correct application. Except as permitted under the Copyright, Designs and Patents Act no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means — electronic, photocopying, recording or otherwise — without prior written permission from BSI. Copyright Copyright subsists in all BSI publications.


Please note the privacy policy. Deviations of the curved cross section are permissible when the flattened area transitions into the curve of the circular cross section uso, and the cross section still falls within the permissible tolerances.

Contact the Information Centre. Inside diameters and cross sections, tolerances and size-identification codes — Part 2: If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to v, a blank page, pages 1 to 11 and a back cover.

This ios of ISO is also applicable to O-rings to be used in aerospace construction. Flow Marks radial orientation of flow marks is not permissible. Grade S O-rings are designed for applications which require higher quality standards in regards to permissible deviations and surface qualities.

Standards and sizes

The following table defines shape and surface deviations in ido per grade levels N and S 1 According to which value is the larger. Compliance with a British Standard does not of itself confer immunity from legal obligations. Flow marks, non-fills and indentations within the limits of the above table shall not be allowed if: This publication does not purport to include all the necessary provisions of a contract.

Figure 4 — Flow marks a Acceptable within dimensional limits. Information regarding online access to British Standards via British Standards Online can be found at http: Quality acceptance criteria Transmissions hydrauliques et pneumatiques — Joints toriques — Partie 3: ISO consists of the following parts, under 36601-3 general title Fluid power systems — O-rings: Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service.


Pleade activate JavaScript for proper execution. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations.

For example, aerospace or critical industrial or automotive applications are covered by this grade. This part of ISO also defines and classifies surface ios on O-rings and specifies maximum acceptable limits for these imperfections. Amendments issued since publication Amd.

Standards are also available from the BSI website at http: Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services.

Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. It is incorporated by Royal Charter. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee ido, the identity of which can be found on the inside front cover.

A list of organizations represented on this committee can kso obtained on request to its secretary. Anti-extrusion devices back-up rings Li ce ns ed c op y: Grade S O-rings are available upon request. Combined Flash combination of offset, flash and parting line projection.

BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Inside diameters and cross sections, tolerances and size-identification codes — Part 1: Permissible tolerances are classified into grade levels.