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 6650-01-477-0073
NSN 6135-01-173-6306
NSN 6220-00-434-7364
NSN 5910-01-206-8648
NSN 5915-01-100-4105
NSN 5965-01-604-6812
NSN 5915-01-051-2774
NSN 5935-01-163-2563
NSN 5975-00-215-8571
NSN 6135-00-318-8359
NSN 5990-01-058-4826
NSN 6145-01-126-7273