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 6650-01-160-9160
NSN 6135-00-347-0595
NSN 5960-00-539-7914
NSN 5935-01-325-5006
NSN 5905-00-486-7603
NSN 5935-00-612-2472
NSN 5835-01-276-4621
NSN 6620-01-633-8443
NSN 5925-00-375-5468
NSN 5920-01-512-0047
NSN 5935-01-451-3935
NSN 5996-00-161-4202