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 6645-00-137-7699
NSN 6130-01-317-1025
NSN 6150-01-328-5759
NSN 5998-00-319-2833
NSN 5935-01-643-7867
NSN 6320-01-064-0372
NSN 6110-01-646-5868
NSN 5998-01-459-9489
NSN 4140-01-179-8299
NSN 5920-00-655-4251
NSN 5895-01-593-7313
NSN 5910-00-430-1157