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 6650-01-506-0386
NSN 6650-01-101-2954
NSN 7035-00-205-1932
NSN 6620-01-642-7219
NSN 5960-00-818-2345
NSN 6150-01-192-6341
NSN 5855-01-213-9076
NSN 5935-00-170-6773
NSN 5950-01-226-3680
NSN 5835-01-177-1092
NSN 5998-01-591-9104
NSN 6130-01-239-4596