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 5998-01-331-4118
NSN 2925-00-371-2285
NSN 5998-00-004-5822
NSN 5835-01-424-4577
NSN 6135-00-294-0950
NSN 4140-01-484-7132
NSN 5905-00-109-2866
NSN 6130-00-462-7123
NSN 6685-01-495-9071
NSN 5935-01-634-0668
NSN 5835-01-408-7576
NSN 6645-00-825-5677