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 5945-01-647-8826
NSN 6620-01-401-5356
NSN 5990-00-578-8850
NSN 6110-00-448-2588
NSN 5930-00-540-6618
NSN 6145-01-200-4659
NSN 4140-01-523-5211
NSN 5915-00-481-7364
NSN 6150-01-534-2816
NSN 6220-00-180-8224
NSN 5935-00-542-3634
NSN 6150-01-546-5584