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 5930-01-388-0756
NSN 6220-01-147-7219
NSN 5945-00-890-3228
NSN 5935-00-406-4278
NSN 5855-00-149-0766
NSN 5920-01-183-7938
NSN 5915-00-419-3960
NSN 5985-01-474-8176
NSN 6135-01-437-9178
NSN 5998-01-500-4473
NSN 5905-01-597-1692
NSN 2925-00-922-8953