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 6145-01-433-5511
NSN 6320-00-174-1362
NSN 5996-01-175-4058
NSN 5945-01-534-3664
NSN 6610-01-269-1894
NSN 5960-01-431-4291
NSN 5935-01-446-5817
NSN 5999-01-010-0789
NSN 5965-01-467-3417
NSN 5998-01-049-7886
NSN 5996-01-561-8910
NSN 7035-01-445-3563