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 6620-00-140-8644
NSN 5975-00-015-7919
NSN 5950-01-227-1913
NSN 6105-01-178-5958
NSN 6650-01-255-4046
NSN 6130-00-445-3980
NSN 4140-00-924-2931
NSN 6130-01-327-3261
NSN 5930-00-090-8393
NSN 6130-00-639-0666
NSN 5950-01-152-2622
NSN 5999-00-413-2399