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 6150-00-900-0052
NSN 5925-01-557-1981
NSN 5945-00-517-9566
NSN 6110-01-205-0064
NSN 5915-01-658-5712
NSN 5975-01-024-2883
NSN 5998-01-429-9430
NSN 5945-00-467-5247
NSN 6135-01-468-6491
NSN 5990-00-226-7894
NSN 5975-01-479-2825
NSN 5965-00-267-4173