BS 7531:2006 pdf download – Rubber bonded fibre jointing for industrial and aerospace purposes – Specification 4 Information to be supplied by purchaser The following information to be supplied by the purchaser shall be fully documented. For compliance with the standard both the definitive requirements specified throughout the standard and the following documented items shall be satisfied. a) the number of this British Standard, i.e. BS 7531:2006 (see 10.1); b) for Grades AX and AY the fibre type (see 5.2); c) the grade of jointing required (see Scope); d) the thickness required (see 7.1); e) the dimensions of sheets required; f) the quantity of sheets required; g) if wire mesh reinforcement is required and, if so the wire material,diameter and mesh size (see 5.3); h) if the jointing will or is likely to come into contact with potable water (see 5.4); i) if the manufacturer’s identification mark is not required to be indelibly marked on the jointing (see 10.3); j) for Grades AX and AY if a test certificate is required (see 11.1); k) if one or both surfaces shall be treated with a suitable release agent, e.g. graphite (see Clause 6). 5 Grades and materials 5.1 Grades For grades AX and AY the binder shall be acrylonitrile-butadiene (NBR) elastomer. 5.2 Material The material shall consist of fibres and inorganic fillers bonded with a suitable elastomer or blend of elastomers, and shall be manufactured in the form of sheets. The fibres shall be uniformly dispersed throughout the jointing. For Grades AX and AY the purchaser shall state which fibre type is required. 5.3 Reinforcement All grades shall be available with or without wire mesh reinforcement. The purchaser shall state if wire mesh reinforcement is required and the wire material, diameter and mesh size should be specified. 5.4 Contact with potable water When used under the conditions for which they are designated, non-metallic products in contact with or likely to come into contact with potable water shall comply with the requirements of BS 6920-1. NOTE 1 Non-metallic products for installation and use in the United Kingdom which are verified and listed under the UK Water Fitting Byelaws Scheme are deemed to satisfy the requirements of this clause. Details of the Scheme are obtainable from WRC plc, 660 Ajax Avenue, Slough SL1 4BG. NOTE 2 Non-metallic products approved by the Department of the Environment Committee on Chemicals and Materials of construction for...
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