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 5998-00-099-4235
NSN 5998-01-239-1854
NSN 5835-00-958-6231
NSN 5990-00-189-6649
NSN 6150-01-180-2206
NSN 5915-01-472-2089
NSN 5910-01-314-7227
NSN 5975-01-612-0451
NSN 6130-00-781-7486
NSN 5998-01-400-0660
NSN 5950-01-422-6512
NSN 6620-00-549-5644