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 5950-01-435-4405
NSN 5945-01-454-8666
NSN 5945-00-832-6879
NSN 5910-01-045-1606
NSN 6105-01-623-9533
NSN 6320-01-388-9450
NSN 6220-00-606-6119
NSN 5915-00-690-9801
NSN 6320-01-265-0665
NSN 4140-01-214-6103
NSN 6610-01-470-7360
NSN 5925-00-058-6363