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 5835-00-419-0575
NSN 5905-01-562-6140
NSN 4140-00-170-5152
NSN 4140-01-495-2216
NSN 5905-01-464-0561
NSN 5985-01-519-4293
NSN 6620-01-633-8443
NSN 6320-01-344-6511
NSN 6130-01-564-3170
NSN 7035-00-991-6877
NSN 6150-01-346-8210
NSN 5945-01-576-5936