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 6105-01-406-2089
NSN 5915-00-943-7437
NSN 6620-01-611-5908
NSN 6240-01-657-8471
NSN 5999-01-261-6757
NSN 5998-01-388-8441
NSN 5855-01-236-9645
NSN 6220-01-415-4854
NSN 5925-01-435-9492
NSN 6150-01-011-7592
NSN 6650-01-506-5636
NSN 5990-01-264-6512