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 5925-00-884-0672
NSN 6105-00-062-4641
NSN 5920-00-900-0220
NSN 7035-01-029-7221
NSN 5945-00-111-2050
NSN 5960-00-195-6435
NSN 5910-01-502-9833
NSN 6645-01-069-3286
NSN 5950-00-111-3430
NSN 2925-00-308-0797
NSN 6650-01-205-8578
NSN 6135-01-633-8502