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 6645-01-422-3510
NSN 7035-01-397-5009
NSN 6105-00-934-0040
NSN 6620-01-459-6401
NSN 6650-01-115-2766
NSN 6650-01-139-5238
NSN 5945-01-542-7411
NSN 5996-01-472-9419
NSN 6130-00-467-5014
NSN 6620-01-062-1662
NSN 4140-01-325-2955
NSN 6110-00-959-3386