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BS 4518:1982

Действует
Specification for metric dimensions of toroidal sealing rings ('O'-rings) and their housings — 28 стр.
Dimensions and tolerances of toroidal sealing rings for hydraulic and pneumatic applications in static and dynamic situations. Also the appropriate housing dimensions when at pressures up to 100 bar.
ICS
21.180 Housings, enclosures, other machine parts / Кожухи, корпусы и другие детали машин
21.140 Seals, glands / Уплотнения, сальники