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 5915-01-388-2911
NSN 5996-01-166-5716
NSN 6150-01-158-5438
NSN 5855-00-149-0766
NSN 5935-01-212-8722
NSN 6145-01-525-5704
NSN 5996-00-088-2515
NSN 5920-00-075-9904
NSN 6130-00-111-3384
NSN 5999-00-289-1472
NSN 5960-01-163-8905
NSN 6650-00-266-6808