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 5950-01-004-2655
NSN 6135-00-062-5080
NSN 5895-00-471-1632
NSN 6135-01-572-7548
NSN 5975-00-722-1954
NSN 5990-01-425-2175
NSN 4140-01-384-5267
NSN 7035-01-270-0325
NSN 5945-01-432-2416
NSN 5965-01-126-2832
NSN 5975-00-092-8861
NSN 5965-00-518-0958