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 5999-01-577-0399
NSN 5935-00-610-1901
NSN 5925-01-611-1966
NSN 6105-00-776-7205
NSN 5930-01-328-7899
NSN 5950-01-589-9428
NSN 6620-00-232-2048
NSN 6105-00-446-0068
NSN 6320-01-280-5091
NSN 6130-00-256-7934
NSN 6220-01-634-0660
NSN 5915-01-116-0964