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 5990-00-099-0822
NSN 5920-01-388-7293
NSN 6220-00-225-8345
NSN 5965-01-377-3587
NSN 6645-00-968-6118
NSN 5999-01-600-0305
NSN 5985-01-323-6686
NSN 5910-00-568-9986
NSN 5990-00-862-3271
NSN 5910-01-597-9558
NSN 5999-01-630-5590
NSN 5945-01-535-8242