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 6135-01-551-0562
NSN 4140-00-770-1052
NSN 6620-00-050-1086
NSN 6610-01-070-6044
NSN 5910-01-563-1376
NSN 5945-01-401-5323
NSN 6150-00-456-0775
NSN 6620-00-856-1258
NSN 5920-00-518-4452
NSN 5985-01-375-3535
NSN 6620-00-924-4369
NSN 5835-01-501-0526