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 5930-00-359-7785
NSN 7035-01-632-8861
NSN 7035-00-865-9105
NSN 5985-01-332-3086
NSN 5905-01-641-3575
NSN 2925-00-134-4827
NSN 6240-01-142-2963
NSN 5835-01-362-0305
NSN 5905-00-868-6668
NSN 5965-01-453-1108
NSN 6320-01-171-3238
NSN 6130-00-600-1971