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 6650-01-024-9554
NSN 6130-00-121-4725
NSN 4140-00-699-0904
NSN 5945-00-964-7361
NSN 6320-00-857-4073
NSN 5855-01-105-7793
NSN 5975-00-273-0790
NSN 6620-01-058-6308
NSN 5996-01-193-5180
NSN 6150-00-522-9952
NSN 6645-01-335-5845
NSN 5935-00-707-3274