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 5910-01-409-0729
NSN 4140-01-075-9577
NSN 5855-01-658-4510
NSN 5920-01-616-3401
NSN 6320-01-652-3806
NSN 5996-01-176-7275
NSN 4140-00-983-8048
NSN 5915-00-776-6496
NSN 6105-00-906-2280
NSN 6620-01-492-4271
NSN 6320-01-332-7020
NSN 5930-01-532-3441