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 6105-01-142-3057
NSN 6130-01-128-6210
NSN 4140-01-340-5858
NSN 5905-01-380-3918
NSN 5965-00-864-8046
NSN 5915-01-364-7917
NSN 7035-00-193-2269
NSN 5935-01-427-3822
NSN 5895-01-500-2086
NSN 5855-01-504-6080
NSN 6650-01-523-0888
NSN 5945-01-197-5376