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 5998-00-023-3844
NSN 5990-01-640-7795
NSN 6240-01-467-0751
NSN 5985-01-239-9255
NSN 5915-01-159-0117
NSN 5935-01-461-7008
NSN 5960-00-038-5433
NSN 6650-00-279-5741
NSN 6135-01-226-4071
NSN 5965-00-139-4870
NSN 6105-00-607-6053
NSN 7035-01-652-5482