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 6650-00-186-5966
NSN 6130-00-303-3985
NSN 6135-01-071-4923
NSN 5945-01-205-3534
NSN 2925-00-580-4931
NSN 5905-01-411-3945
NSN 6130-01-221-1673
NSN 5965-01-261-6073
NSN 5990-00-226-7894
NSN 5910-01-529-6105
NSN 6620-01-037-0275
NSN 6145-01-620-9865