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 7035-00-251-8201
NSN 6220-01-182-3380
NSN 6135-01-423-7502
NSN 5965-00-677-1461
NSN 6320-01-082-2970
NSN 5915-00-512-2597
NSN 4140-01-023-8098
NSN 5915-01-068-0995
NSN 7035-01-192-2659
NSN 6135-00-452-2266
NSN 5945-01-193-7186
NSN 6145-01-592-5741