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 2925-00-601-0681
NSN 5930-00-758-3422
NSN 5915-01-367-4614
NSN 5950-00-523-7386
NSN 5930-00-455-0163
NSN 5920-00-789-7979
NSN 5950-01-589-9428
NSN 6620-00-112-1214
NSN 6320-01-578-6006
NSN 5990-01-242-4493
NSN 5920-01-457-8398
NSN 6320-01-116-3980