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 5935-00-216-7435
NSN 6145-00-158-8704
NSN 5925-00-142-9991
NSN 6610-00-199-5357
NSN 6650-00-647-1085
NSN 6130-01-323-6416
NSN 6620-01-342-5953
NSN 5920-00-876-8989
NSN 2925-01-495-1178
NSN 6645-01-382-7341
NSN 6645-01-411-5657
NSN 6240-01-575-4089