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 6145-00-081-6686
NSN 5915-01-300-6279
NSN 6145-00-829-7469
NSN 6145-01-528-3959
NSN 5960-01-604-1158
NSN 5910-01-521-9537
NSN 6650-00-665-3658
NSN 6320-01-029-4220
NSN 5835-00-523-0736
NSN 6220-01-411-6796
NSN 5950-01-179-1886
NSN 5910-00-554-1422