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BS 6997:1990 Specification for elastomeric toroidal sealing rings ('O'-rings) manufactured from acrylonitrile-butadiene rubbers complying with BS 6996
standard by BSI Group, 08/31/1990
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Requirements for the composition and physical properties of rings of five different hardness values, for use in particular in contact with mineral oils.Cross References:
BS 903:Part A1
BS 903:Part A6
BS 903:Part A16
BS 903:Part A26
BS 907
BS 1806
BS 3574
BS 4518
BS 6442
BS 6996