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 5945-01-232-4573
NSN 5960-00-349-7650
NSN 6610-00-573-6066
NSN 5998-01-381-9577
NSN 5999-01-084-3089
NSN 2925-00-167-6763
NSN 6320-00-593-0379
NSN 6135-00-833-9909
NSN 5975-01-261-6328
NSN 5965-00-062-0559
NSN 5895-01-411-2473
NSN 2925-01-196-6187