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 6150-00-452-1086
NSN 5945-00-184-7983
NSN 5930-01-508-4074
NSN 6105-00-283-2849
NSN 5990-01-633-9503
NSN 5925-01-097-3632
NSN 5920-00-162-9945
NSN 2925-00-474-4990
NSN 7035-01-445-3563
NSN 7035-01-537-9439
NSN 6650-01-456-1225
NSN 5999-00-280-7722