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 5996-01-233-9454
NSN 6105-01-512-8752
NSN 5905-01-231-5149
NSN 4140-00-078-9357
NSN 5960-01-523-9098
NSN 5855-01-195-2518
NSN 6650-00-336-4828
NSN 6130-00-822-4903
NSN 5925-01-468-6257
NSN 5960-00-195-4448
NSN 5910-00-697-9998
NSN 5915-01-560-6795