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 6645-01-297-9564
NSN 6105-01-269-0485
NSN 2925-01-633-4048
NSN 5975-00-551-3152
NSN 4140-00-300-4641
NSN 6220-01-529-6728
NSN 5935-01-460-1878
NSN 5998-00-876-4883
NSN 5935-01-124-1721
NSN 5855-00-444-2298
NSN 5960-01-371-9143
NSN 5945-01-196-4656