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 5855-01-568-7772
NSN 6145-00-174-9344
NSN 6645-00-258-8547
NSN 5920-00-921-0390
NSN 5965-00-417-8182
NSN 6610-01-513-0303
NSN 6620-00-104-6937
NSN 5915-01-616-3485
NSN 5905-00-803-5899
NSN 5905-01-620-3226
NSN 4140-01-461-2350
NSN 5915-01-282-2610