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 5975-00-839-0984
NSN 6145-01-288-2154
NSN 5930-00-925-1891
NSN 6150-01-198-2772
NSN 5985-01-381-2249
NSN 5999-01-576-9656
NSN 6105-01-063-7704
NSN 5975-01-161-3381
NSN 6620-01-503-0817
NSN 5945-00-508-5918
NSN 5945-01-083-2350
NSN 5855-01-273-0927