BS 6997:1990

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Specification for elastomeric toroidal sealing rings ('O'-rings) manufactured from acrylonitrile-butadiene rubbers complying with BS 6996|Testing conditions, Toroidal sealing rings, Test duration, Hardness, Compression set, Nitrile rubber, Thickness measurement, Sealing rings, Compression testing, Density, Test specimens, Elastomers, Marking, Grades (quality), Synthetic rubber, Seals

112 GBP