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 5915-01-433-2405
NSN 5855-01-648-7687
NSN 2925-00-497-7808
NSN 5960-00-062-4906
NSN 6650-01-376-5934
NSN 5965-01-512-0654
NSN 5990-01-332-6722
NSN 6105-00-473-2314
NSN 6645-00-470-5310
NSN 6685-01-012-1557
NSN 5935-00-288-5973
NSN 5975-01-365-0127