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 6105-01-491-5001
NSN 5999-01-456-8223
NSN 5960-00-675-9373
NSN 6240-00-369-9768
NSN 6320-01-449-1014
NSN 6130-01-390-4093
NSN 5996-01-464-4276
NSN 5920-00-351-8428
NSN 5960-01-484-2042
NSN 6645-01-370-4259
NSN 6240-01-645-7751
NSN 5990-01-559-0578