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 6135-01-156-4627
NSN 5920-01-647-1794
NSN 5855-01-213-9076
NSN 5935-01-228-7174
NSN 5925-00-222-3843
NSN 2925-01-199-7394
NSN 6320-01-029-4220
NSN 4140-00-968-0685
NSN 5999-01-295-2155
NSN 5996-01-509-6443
NSN 5960-01-388-1988
NSN 6685-01-167-2966