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 5905-01-605-4978
NSN 5915-01-069-2775
NSN 6135-01-370-9441
NSN 5960-00-629-8342
NSN 5960-00-369-8018
NSN 5945-01-547-2440
NSN 5915-00-702-3030
NSN 6220-01-647-7737
NSN 5930-00-144-4994
NSN 6105-01-150-6751
NSN 6620-01-546-4942
NSN 6240-01-053-0666