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 5999-01-557-1605
NSN 5999-01-433-1414
NSN 5925-01-422-6653
NSN 4140-01-303-5103
NSN 5905-01-395-7616
NSN 6150-00-998-4948
NSN 5920-01-600-9561
NSN 5975-00-189-0093
NSN 5999-00-212-7853
NSN 5998-01-597-0818
NSN 5960-01-355-2968
NSN 6240-01-348-0057