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 2925-00-766-1278
NSN 6130-00-070-6140
NSN 5998-01-128-8115
NSN 5935-01-510-4618
NSN 6150-01-102-5844
NSN 5905-00-430-2664
NSN 6240-01-399-4105
NSN 4140-01-357-2964
NSN 5985-00-107-7928
NSN 5996-01-223-4665
NSN 5935-00-730-4593
NSN 5910-01-574-9765