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 6135-00-262-6807
NSN 6620-00-527-6523
NSN 5915-00-490-3739
NSN 5835-01-297-1909
NSN 6150-00-723-2521
NSN 6320-01-352-5653
NSN 5935-00-420-1188
NSN 5975-00-081-5247
NSN 5945-01-513-7759
NSN 6320-01-129-9656
NSN 5915-01-408-4655
NSN 5910-01-004-6419