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 5965-00-781-3578
NSN 5910-01-151-6513
NSN 6105-01-046-8413
NSN 6135-01-210-8715
NSN 5915-00-885-0340
NSN 6105-01-063-7704
NSN 5965-00-335-0305
NSN 4140-01-433-7367
NSN 6645-00-269-8440
NSN 5945-00-197-7673
NSN 5855-00-879-5849
NSN 7035-01-467-7779