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 2925-00-228-8854
NSN 5895-00-111-8281
NSN 6620-01-511-2865
NSN 5920-00-276-8657
NSN 6685-01-166-3903
NSN 6145-00-269-4271
NSN 7035-01-012-2259
NSN 5945-01-347-2208
NSN 6645-01-130-2391
NSN 6650-00-976-2507
NSN 5905-01-036-5133
NSN 6135-01-579-8864