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 7035-01-099-2311
NSN 6645-00-954-2822
NSN 4140-01-085-9126
NSN 6135-01-633-8502
NSN 4140-01-355-2332
NSN 5910-00-106-1265
NSN 5835-01-224-2792
NSN 5999-00-761-4738
NSN 5920-01-368-5413
NSN 6620-00-506-0112
NSN 5835-01-316-3255
NSN 6130-00-471-5067