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 6650-01-146-8959
NSN 5920-01-237-5466
NSN 5996-00-455-8299
NSN 5945-01-055-0824
NSN 5965-00-841-9195
NSN 6620-00-851-1487
NSN 6135-01-313-8323
NSN 6130-01-003-8041
NSN 5835-00-550-7728
NSN 6610-01-047-7245
NSN 5965-01-003-2641
NSN 5945-01-327-2697