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 5960-01-499-3544
NSN 5855-01-385-4234
NSN 6320-01-378-6191
NSN 6110-01-546-9082
NSN 6220-01-481-3827
NSN 5960-01-120-4893
NSN 5965-00-677-1461
NSN 6650-01-449-1413
NSN 6220-01-258-6217
NSN 5999-01-568-8494
NSN 6610-00-042-8461
NSN 5998-01-439-8402