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 5996-01-633-7979
NSN 6110-01-058-5321
NSN 5945-01-647-3839
NSN 5999-01-481-0553
NSN 6610-01-291-4173
NSN 5960-01-371-5494
NSN 5855-01-058-5576
NSN 5998-01-541-4927
NSN 5910-01-645-7686
NSN 6105-01-538-1010
NSN 6130-01-579-8545
NSN 4140-01-385-2558