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 5935-01-346-8437
NSN 6135-00-461-3590
NSN 6645-00-315-9254
NSN 5910-00-262-0959
NSN 5965-00-368-8204
NSN 5965-01-075-3148
NSN 5920-01-144-1500
NSN 5920-00-227-6179
NSN 5998-01-371-9082
NSN 6320-00-036-3688
NSN 6105-01-055-5049
NSN 5855-01-489-0278