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 4140-00-159-8471
NSN 5895-01-269-5726
NSN 5935-01-045-3799
NSN 6145-00-560-5726
NSN 5975-01-629-1333
NSN 6130-00-179-8311
NSN 5925-01-317-8441
NSN 5965-01-260-5781
NSN 5930-01-502-7156
NSN 5950-00-189-1433
NSN 6105-01-247-8464
NSN 5945-00-189-0650