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 5996-01-513-3919
NSN 5930-00-473-2721
NSN 7035-01-547-0725
NSN 5935-00-353-3293
NSN 6240-01-203-4992
NSN 6685-01-206-4974
NSN 6650-00-251-7512
NSN 5925-01-406-4093
NSN 5999-01-450-8882
NSN 5920-00-149-0854
NSN 5950-01-164-5316
NSN 2925-01-262-1418