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 5910-00-118-2672
NSN 6135-00-896-3187
NSN 5910-00-862-3552
NSN 6220-01-267-1411
NSN 5855-01-518-5278
NSN 5998-01-476-7129
NSN 6645-00-960-6594
NSN 5905-01-153-8884
NSN 7035-01-174-7878
NSN 5855-01-442-6413
NSN 6650-00-782-4624
NSN 6620-01-256-9703