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 6105-00-505-0172
NSN 6650-01-195-3957
NSN 5920-01-535-2003
NSN 5950-00-702-1265
NSN 5905-01-032-4571
NSN 5999-00-578-4853
NSN 6110-00-141-1966
NSN 6240-01-462-6958
NSN 5998-00-388-0259
NSN 5905-01-521-0275
NSN 6220-00-284-3220
NSN 5905-01-155-9764