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 6610-01-336-8027
NSN 6650-00-736-4279
NSN 6645-01-261-6903
NSN 5930-01-422-1195
NSN 5915-01-178-2598
NSN 5930-01-188-7223
NSN 5930-01-589-3234
NSN 5950-01-040-0560
NSN 5960-01-151-4518
NSN 4140-00-177-0463
NSN 6620-00-197-5130
NSN 5965-00-481-4662