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 6320-00-450-7014
NSN 6105-01-634-0322
NSN 6645-00-679-8203
NSN 6110-00-901-9820
NSN 6105-01-567-3217
NSN 5920-01-442-3140
NSN 5945-00-135-6526
NSN 5935-01-476-5754
NSN 6130-00-586-7173
NSN 6150-01-411-5216
NSN 5835-00-987-9341
NSN 5998-01-411-0274