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 6320-01-582-6668
NSN 5999-00-376-5072
NSN 5855-00-138-2386
NSN 5998-01-336-3451
NSN 5905-00-151-6653
NSN 5999-01-576-0325
NSN 5960-01-350-5332
NSN 5996-01-377-3743
NSN 6145-00-736-8338
NSN 5935-01-134-0973
NSN 6145-00-985-3284
NSN 4140-01-042-4765