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 5975-01-430-7030
NSN 5935-00-885-8598
NSN 5905-00-523-8458
NSN 6650-00-839-2527
NSN 5905-01-424-1739
NSN 5945-01-220-2271
NSN 6320-01-618-7800
NSN 5920-01-242-9208
NSN 5920-00-224-9848
NSN 5975-01-106-3595
NSN 5998-01-303-8378
NSN 5965-01-615-5139