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 5920-01-381-0205
NSN 5855-00-138-2386
NSN 6130-01-244-4810
NSN 4140-00-853-3889
NSN 5965-00-111-2073
NSN 5998-01-352-7789
NSN 5945-00-639-9848
NSN 5965-01-057-3349
NSN 6220-00-296-2189
NSN 5975-01-272-6268
NSN 5910-00-568-3761
NSN 5835-01-186-4961