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 5910-00-557-0923
NSN 6645-01-206-4888
NSN 6645-00-632-0736
NSN 5945-00-496-1588
NSN 6220-00-719-7714
NSN 6135-01-420-5907
NSN 6620-01-158-1266
NSN 6650-00-732-5031
NSN 5975-01-351-6846
NSN 6135-00-078-9931
NSN 6110-00-813-8181
NSN 5999-01-206-9939