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 4140-00-447-1613
NSN 5945-00-208-4775
NSN 6220-01-485-2381
NSN 5910-01-041-1991
NSN 6135-01-646-5986
NSN 6130-01-526-0965
NSN 6650-01-514-0240
NSN 6620-01-081-1042
NSN 5915-01-554-1391
NSN 6645-01-331-5674
NSN 5935-01-338-7726
NSN 6685-00-355-7965