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 5999-00-485-4055
NSN 5905-01-651-8500
NSN 5998-00-763-3813
NSN 6610-01-049-8747
NSN 5945-01-658-8105
NSN 6620-01-542-8709
NSN 5915-01-397-4030
NSN 5905-01-010-3320
NSN 5835-00-143-4153
NSN 6135-00-930-0810
NSN 5998-00-968-1242
NSN 5895-01-449-4689