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 5996-01-414-5167
NSN 5996-01-056-4952
NSN 6130-00-275-5929
NSN 6650-01-313-1300
NSN 4140-01-088-6981
NSN 2925-00-766-1278
NSN 6135-00-235-1938
NSN 5855-01-530-4147
NSN 6320-00-925-0558
NSN 5965-01-018-2792
NSN 6320-01-564-0893
NSN 5998-01-543-8538