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 5945-00-725-7001
NSN 6220-00-703-5200
NSN 6220-01-173-3177
NSN 5925-01-238-1899
NSN 5905-00-276-8597
NSN 5985-00-188-9665
NSN 6645-00-103-2517
NSN 5999-01-322-7980
NSN 2925-01-547-4565
NSN 5960-01-541-9884
NSN 6650-01-168-1659
NSN 5960-01-468-5785