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 6220-01-354-7598
NSN 4140-01-331-5974
NSN 6650-00-116-3432
NSN 5915-01-330-5937
NSN 5996-01-419-4893
NSN 6130-01-197-5214
NSN 5945-01-111-4515
NSN 6320-01-365-2701
NSN 5935-01-550-4697
NSN 6610-01-352-5500
NSN 5910-00-982-4902
NSN 5996-01-381-5313