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 6320-01-515-7913
NSN 6135-01-478-4657
NSN 6650-01-421-2370
NSN 5965-01-323-0501
NSN 5910-01-603-6017
NSN 5855-00-560-0110
NSN 5999-01-497-0825
NSN 5920-01-050-7474
NSN 5985-00-199-8997
NSN 6220-01-089-7185
NSN 4140-00-640-6811
NSN 5996-01-118-2296