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 6135-01-142-2417
NSN 5915-01-560-4050
NSN 6320-00-513-8376
NSN 6650-01-494-9956
NSN 6135-00-161-0746
NSN 7035-01-014-3808
NSN 5960-01-462-1864
NSN 5895-01-656-7263
NSN 4140-01-065-1884
NSN 6650-00-494-1000
NSN 6320-01-173-7950
NSN 6130-01-450-5531