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 5999-01-562-8441
NSN 5915-01-382-9383
NSN 5975-01-571-1583
NSN 5920-01-634-0250
NSN 5998-01-202-0095
NSN 6650-01-201-2956
NSN 5920-01-386-7566
NSN 5920-00-422-0757
NSN 5999-00-083-9055
NSN 5930-01-514-6087
NSN 5905-01-131-7541
NSN 6620-01-423-7300