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 4140-00-900-6102
NSN 5855-00-089-3974
NSN 6130-01-015-4657
NSN 5985-01-273-4900
NSN 6135-01-349-6285
NSN 6105-00-954-0757
NSN 6135-01-050-3194
NSN 5965-00-342-5126
NSN 5895-00-580-0842
NSN 6320-01-399-6177
NSN 5905-01-184-1493
NSN 5960-01-096-6294