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 6150-00-515-0764
NSN 6240-01-380-6466
NSN 6620-01-146-6968
NSN 4140-00-922-8875
NSN 6220-00-616-4247
NSN 5855-00-444-2298
NSN 7035-00-433-5670
NSN 7035-00-931-3684
NSN 6130-00-003-1952
NSN 5935-00-400-3388
NSN 6620-01-495-3536
NSN 6650-01-145-5173