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 5935-01-289-8668
NSN 5915-01-445-6577
NSN 5925-01-139-5372
NSN 5945-00-686-1534
NSN 6145-00-365-0121
NSN 5920-01-389-3686
NSN 5975-01-285-0581
NSN 6650-01-428-6799
NSN 6610-01-384-1587
NSN 6150-00-198-1074
NSN 5910-01-373-3884
NSN 5935-01-514-2903