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 5950-01-422-9228
NSN 5960-00-262-1834
NSN 5960-01-411-5899
NSN 5905-01-610-3429
NSN 5920-00-019-9044
NSN 5960-01-564-5044
NSN 6650-01-462-5879
NSN 5985-00-180-5828
NSN 7035-01-065-8703
NSN 6320-01-362-4863
NSN 6130-01-076-7362
NSN 6145-00-975-0912