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 6320-01-390-5385
NSN 6240-01-279-0552
NSN 2925-01-589-9136
NSN 5945-00-783-8155
NSN 6645-01-656-3843
NSN 6105-00-071-4773
NSN 6645-00-843-8837
NSN 5920-00-761-0134
NSN 5990-01-128-6140
NSN 5930-00-880-3296
NSN 5965-00-493-6008
NSN 6240-00-084-0176