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 5945-00-651-1654
NSN 5999-01-254-7879
NSN 5855-00-149-0766
NSN 6130-01-400-3651
NSN 5835-01-357-1247
NSN 5930-00-113-7642
NSN 6650-01-235-0981
NSN 5965-00-866-3371
NSN 2925-01-446-6976
NSN 4140-01-569-7183
NSN 5950-00-246-5277
NSN 5920-01-438-6102