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 5925-00-687-1625
NSN 6220-00-110-8921
NSN 6150-01-294-1996
NSN 5965-01-254-6527
NSN 6150-01-196-6073
NSN 5855-00-879-5849
NSN 6650-00-629-8027
NSN 6105-00-291-0154
NSN 4140-01-534-6960
NSN 5920-00-826-0949
NSN 2925-01-303-5266
NSN 6650-01-592-2445