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 5990-00-924-4167
NSN 6220-01-534-2486
NSN 2925-00-660-8131
NSN 5960-01-632-6576
NSN 5990-00-111-3614
NSN 6105-01-092-5986
NSN 4140-01-576-4801
NSN 5930-01-410-7641
NSN 5960-00-104-5955
NSN 4140-00-740-2153
NSN 4140-01-550-0022
NSN 6610-01-625-2926