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 5999-00-908-8066
NSN 5930-01-321-8129
NSN 4140-01-467-1986
NSN 6645-01-466-2083
NSN 6105-01-545-7364
NSN 5999-01-433-2271
NSN 5855-00-149-0766
NSN 6110-00-102-7797
NSN 6135-00-635-9187
NSN 7035-01-647-9698
NSN 5965-00-251-2529
NSN 5855-01-424-7477