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 6620-01-007-0103
NSN 5910-00-885-4255
NSN 6650-01-161-9876
NSN 5835-00-909-8088
NSN 6110-00-429-4777
NSN 5895-01-188-7470
NSN 5905-00-003-3963
NSN 6105-01-048-6370
NSN 5930-01-519-7903
NSN 5945-01-235-1267
NSN 4140-00-895-9624
NSN 6135-01-322-4655