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 6150-01-297-3930
NSN 6620-00-456-0404
NSN 6130-00-959-2117
NSN 4140-01-371-0980
NSN 7035-01-512-1826
NSN 5910-00-787-2112
NSN 6110-00-723-4209
NSN 5915-01-135-3595
NSN 5975-01-024-8486
NSN 5945-01-165-4334
NSN 6645-00-399-4551
NSN 5985-01-154-9195