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 6320-01-434-6861
NSN 5835-00-594-4921
NSN 5935-00-263-7868
NSN 5990-01-024-9659
NSN 5935-00-339-9011
NSN 6650-01-381-2972
NSN 5910-01-156-9037
NSN 5975-00-677-7036
NSN 5910-01-157-9687
NSN 5999-01-259-8595
NSN 6130-01-472-2411
NSN 6650-01-170-1287