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 5996-00-713-0935
NSN 6610-00-678-9887
NSN 4140-01-145-4474
NSN 6110-01-125-9723
NSN 4140-01-575-0968
NSN 5998-01-313-0619
NSN 5999-01-181-6402
NSN 5835-01-364-6830
NSN 6105-01-359-7843
NSN 5920-00-357-0260
NSN 7035-01-492-6799
NSN 5895-00-553-4751