A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5965-01-618-9836
NSN 2925-00-608-0856
NSN 5945-01-494-8272
NSN 6130-00-613-7448
NSN 5920-01-643-5913
NSN 5999-00-990-1731
NSN 6685-01-553-4325
NSN 6105-01-527-4147
NSN 6130-01-058-6929
NSN 2925-01-424-0235
NSN 6620-00-179-9079
NSN 6220-01-202-0195