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 5920-01-317-5555
NSN 5960-01-151-1152
NSN 6685-01-207-6736
NSN 5998-00-110-7247
NSN 5910-00-078-9986
NSN 5975-01-651-6637
NSN 5996-00-959-6511
NSN 5930-01-469-5595
NSN 6220-01-132-5901
NSN 5990-00-045-7929
NSN 5855-00-149-0766
NSN 5945-01-024-3713