BS EN 3746 pdf free download

BS EN 3746 pdf free download. O-rings, in fluorosilicone rubber (FVMQ) — Hardness 80 IRHD.
1 Scope This standard specifies the characteristics of O-rings in fluorosilicone rubber (FVMQ), hardness 80 IRHD for aerospace applications. 2 Normative references ISO 3601 -1 Fluid systems – Sealing devices – O-rings – Part 1 : inside diameters, cross-sections, tolerances and size identification code EN 3376 Aerospace series – Limits of surface imperfections of elastomeric toroidal sealing rings (O-rings) 1 ) EN 3747 Aerospace series – O-rings, in fluorosilicone rubber (FVMQ) – Technical specification 1 ) EN 3827 Aerospace series – Fluorosilicone rubber (FVMQ) – Hardness 80 IRHD 2) 3 Application 3.1 Typical use These O-rings are intended to be used in air, mineral and synthetic oil and fuel systems. NOTE: Not to be used with phosphoric ester type hydraulic fluids (permanent or temporary immersion). 3.2 Temperature range – Continuous service: from -55 °C to + 1 50 °C ; – Intermitent service: from -55 °C to + 200 °C. 4 Required characteristics 4.1 Configuration – Dimensions – Tolerances – Masses Dimensions and tolerances are in millimetres. 4.1.1 Configuration code A Section diameter d 2 = 1 ,8 :± 0,08 3) See figure 1 and table 1 Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: +44 (0)20 8996 9000. Fax: +44 (0)20 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 8996 7001. Email: orders@bsi-global.com. Standards are also available from the BSI website at http://www.bsi-global.com. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested. 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. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel: +44 (0)20 8996 7111. Fax: +44 (0)20 8996 7048. Email: info@bsi-global.com. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel: +44 (0)20 8996 7002. Fax: +44 (0)20 8996 7001. Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 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. 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. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. Details and advice can be obtained from the Copyright & Licensing Manager. Tel: +44 (0)20 8996 7070. Fax: +44 (0)20 8996 7553.BS EN 3746 pdf download.