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 5965-01-303-6105
NSN 5915-00-925-2513
NSN 6240-01-074-6962
NSN 6240-01-612-5386
NSN 5930-00-892-8751
NSN 5915-01-605-7455
NSN 6320-01-578-6006
NSN 5920-01-513-8858
NSN 6145-01-241-7695
NSN 4140-01-007-9793
NSN 2925-00-391-0331
NSN 5910-01-550-8339