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 5998-00-159-0766
NSN 5905-01-397-5077
NSN 6150-01-246-3339
NSN 5910-01-088-3876
NSN 5965-01-040-4178
NSN 5855-01-364-1005
NSN 6105-01-529-2134
NSN 5990-01-382-5364
NSN 7035-01-070-3143
NSN 5945-00-035-4439
NSN 5855-01-100-3272
NSN 6650-01-510-9488