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 6135-01-453-3201
NSN 6150-00-189-0292
NSN 5920-00-016-8255
NSN 6130-01-477-2949
NSN 5965-00-988-8770
NSN 5930-01-328-3004
NSN 6620-00-663-8962
NSN 6150-01-055-8641
NSN 4140-01-047-4093
NSN 6685-01-474-2254
NSN 5950-00-949-5402
NSN 5945-01-256-8845