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 6610-01-503-2951
NSN 5915-01-007-7322
NSN 5895-01-285-5834
NSN 5999-01-422-2962
NSN 5935-01-346-9368
NSN 6650-01-641-7792
NSN 5920-00-030-5712
NSN 6145-00-768-8976
NSN 6135-00-461-3590
NSN 6610-00-221-6124
NSN 5915-01-501-5222
NSN 6105-01-029-5245