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 4140-01-164-1192
NSN 5915-01-474-8027
NSN 5999-01-535-6045
NSN 5920-01-364-1866
NSN 5990-01-558-4536
NSN 7035-01-633-9537
NSN 6620-01-225-3245
NSN 6135-01-324-4692
NSN 5915-00-981-6719
NSN 6130-01-422-0128
NSN 6105-01-393-0619
NSN 6130-00-885-4046