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 6145-01-509-2482
NSN 2925-01-004-5627
NSN 5920-01-254-5152
NSN 6620-01-276-9825
NSN 6220-00-187-0649
NSN 5999-01-147-4844
NSN 6130-01-381-2238
NSN 5905-01-481-3661
NSN 5960-01-134-4099
NSN 6110-01-452-8337
NSN 5998-00-088-4866
NSN 5960-00-600-7370