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 5935-01-082-6526
NSN 5855-01-597-4404
NSN 5915-01-526-2094
NSN 5895-00-798-5798
NSN 6240-00-316-3167
NSN 5930-01-222-1534
NSN 5915-00-597-0038
NSN 5835-01-380-5943
NSN 6320-01-247-0898
NSN 5996-01-473-2183
NSN 6145-01-502-6399
NSN 5998-00-980-2943