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 5835-00-269-2232
NSN 6150-00-141-8793
NSN 5910-01-643-8899
NSN 5920-01-344-2403
NSN 6105-01-545-7364
NSN 6145-00-493-4089
NSN 6130-01-634-0603
NSN 5930-00-498-0336
NSN 5920-00-131-3226
NSN 5895-01-523-3309
NSN 6645-01-113-2525
NSN 5910-00-528-9714