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 4140-00-841-9258
NSN 6320-01-345-5818
NSN 5999-00-055-1042
NSN 5999-01-139-2482
NSN 5999-01-542-8847
NSN 5998-01-434-1334
NSN 6130-00-792-4612
NSN 5920-01-034-7221
NSN 6220-01-625-9473
NSN 2925-01-424-0235
NSN 6610-01-043-6229
NSN 5910-01-012-1831