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 5985-00-019-6317
NSN 5950-00-258-6776
NSN 5965-01-190-7391
NSN 5965-01-633-8849
NSN 5925-01-020-3092
NSN 4140-01-012-2460
NSN 5920-00-401-0217
NSN 6240-00-705-7731
NSN 5915-01-523-1669
NSN 5950-01-384-1772
NSN 5910-00-288-1898
NSN 6645-01-607-5999