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 5935-01-432-9103
NSN 6650-01-567-5855
NSN 5910-00-964-6360
NSN 5965-01-519-1929
NSN 5895-01-310-5632
NSN 5998-00-947-4552
NSN 5915-01-100-4105
NSN 6220-01-318-4996
NSN 5915-00-099-0347
NSN 6645-01-319-6683
NSN 5985-01-397-2653
NSN 5950-01-112-0085