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 4140-01-420-0354
NSN 5905-00-007-2489
NSN 5975-00-477-9966
NSN 5965-01-050-8447
NSN 5895-01-303-6892
NSN 5855-00-688-9954
NSN 6105-01-301-4678
NSN 5999-01-657-3503
NSN 5999-00-716-1100
NSN 5965-00-782-1662
NSN 5895-01-316-7053
NSN 5996-01-069-2915