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 5915-00-754-8614
NSN 6645-01-345-6828
NSN 5945-00-262-0888
NSN 6220-00-443-0589
NSN 6645-01-500-0827
NSN 6620-00-121-4632
NSN 5925-00-421-2802
NSN 6650-01-399-8552
NSN 2925-01-374-2402
NSN 6610-00-284-3093
NSN 2925-01-612-0405
NSN 6240-01-316-2521