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 5945-01-443-2469
NSN 5990-00-101-8318
NSN 5935-00-794-7915
NSN 6240-00-368-8541
NSN 5950-01-441-1328
NSN 5925-00-422-8487
NSN 6145-00-019-0047
NSN 6240-01-399-4105
NSN 5998-00-601-6406
NSN 5960-00-343-2888
NSN 6220-01-454-8317
NSN 6650-00-518-5194