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 5905-01-500-5719
NSN 5996-01-484-2771
NSN 5999-00-977-5478
NSN 6105-01-279-2499
NSN 6105-01-430-0127
NSN 5990-01-407-6615
NSN 6135-00-455-2425
NSN 5960-01-495-0859
NSN 5925-01-022-9733
NSN 5996-01-574-0898
NSN 6650-01-571-1055
NSN 5935-01-231-2238