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 5998-01-116-1187
NSN 5930-01-454-4908
NSN 5855-00-198-3197
NSN 5975-01-189-5925
NSN 5935-01-025-1624
NSN 6620-01-331-9031
NSN 2925-00-233-5644
NSN 5920-01-169-7888
NSN 6320-01-503-7180
NSN 5998-00-471-8939
NSN 5915-01-570-1782
NSN 5990-00-665-4105