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 5930-00-393-2511
NSN 6610-01-335-2543
NSN 4140-01-058-1394
NSN 5905-00-238-7077
NSN 5945-01-111-6729
NSN 5910-01-471-6819
NSN 5960-00-460-4065
NSN 6650-00-862-2142
NSN 6220-01-294-0764
NSN 5998-00-612-8502
NSN 6130-01-197-5817
NSN 5930-01-436-9003