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 5905-01-593-7557
NSN 5855-01-272-3660
NSN 5998-00-800-6769
NSN 6645-01-546-3212
NSN 6220-01-575-9664
NSN 5965-00-486-7907
NSN 6135-00-733-9665
NSN 6130-01-461-4786
NSN 6105-01-365-5626
NSN 6610-01-511-0982
NSN 6645-01-381-6084
NSN 5999-01-229-4422