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 2925-00-833-9466
NSN 6620-01-660-7873
NSN 5920-00-132-3115
NSN 6150-00-659-1310
NSN 6105-01-634-0322
NSN 7035-00-064-7008
NSN 4140-00-989-3257
NSN 6650-01-242-8087
NSN 5965-01-237-3342
NSN 6105-01-647-4683
NSN 6145-00-909-0614
NSN 6145-01-369-1622