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 6130-01-642-7487
NSN 6650-01-425-1600
NSN 5930-00-445-9074
NSN 6320-01-202-8761
NSN 6645-01-169-8030
NSN 5920-01-010-4855
NSN 7035-01-549-6765
NSN 6320-00-682-3448
NSN 5855-01-534-4336
NSN 6240-01-623-2413
NSN 5985-01-535-0478
NSN 5998-01-331-9903