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 6135-01-201-5858
NSN 6240-01-628-9240
NSN 5999-00-901-4689
NSN 5965-01-411-4767
NSN 4140-00-669-6109
NSN 6240-00-781-1034
NSN 5855-01-352-7033
NSN 6110-00-269-2696
NSN 5835-00-233-6327
NSN 5996-01-484-3448
NSN 6240-01-415-5581
NSN 5920-01-065-1824