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 4140-01-542-5199
NSN 5945-01-518-6778
NSN 6685-01-048-4682
NSN 5975-01-407-4076
NSN 5945-00-030-1992
NSN 2925-00-737-6476
NSN 4140-00-356-0712
NSN 5999-01-631-0682
NSN 6650-00-850-3312
NSN 2925-01-309-3075
NSN 5930-01-538-4739
NSN 5930-01-550-0998