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 6135-01-589-0333
NSN 6110-01-516-9744
NSN 5905-00-721-4378
NSN 5999-00-111-4955
NSN 5915-01-268-0930
NSN 5985-01-125-4166
NSN 6110-01-222-0767
NSN 6650-00-428-7055
NSN 6110-01-043-3079
NSN 5999-00-788-4691
NSN 5915-00-631-6172
NSN 4140-00-958-6916