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 6130-00-021-5372
NSN 2925-01-185-1814
NSN 6150-00-480-1253
NSN 5965-01-271-0808
NSN 6150-00-075-4965
NSN 5960-01-408-6290
NSN 6150-00-189-0292
NSN 4140-00-078-9357
NSN 6645-00-658-7838
NSN 6145-01-012-2823
NSN 6620-00-947-3889
NSN 6650-01-294-1067