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 6320-00-432-2772
NSN 5915-01-367-8614
NSN 5990-01-185-9835
NSN 6650-01-217-0303
NSN 6130-01-462-5927
NSN 6685-01-382-0614
NSN 5990-01-024-9659
NSN 6610-01-658-6611
NSN 6220-00-397-6910
NSN 5855-01-500-0449
NSN 5998-00-031-4796
NSN 6150-01-661-3112