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 5990-01-016-8247
NSN 5915-01-397-6455
NSN 6650-00-118-5600
NSN 6650-01-126-3101
NSN 6110-01-449-0150
NSN 5975-00-229-9593
NSN 5945-01-424-7237
NSN 5855-01-542-9059
NSN 5930-01-188-9057
NSN 6135-00-643-4843
NSN 5920-01-557-2860
NSN 7035-00-054-3414