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 7035-01-429-7954
NSN 6130-01-047-3913
NSN 6105-00-961-1668
NSN 6685-00-224-5310
NSN 5975-01-634-0678
NSN 6145-01-184-0321
NSN 5895-01-103-5216
NSN 5910-01-371-5550
NSN 5920-01-603-9341
NSN 4140-00-222-2186
NSN 6620-00-273-8735
NSN 4140-00-850-8133