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 6645-00-296-8310
NSN 6645-00-729-9900
NSN 5999-00-513-3688
NSN 2925-01-121-3355
NSN 5835-01-274-1035
NSN 5855-01-070-4072
NSN 5998-00-844-8113
NSN 5910-00-761-5878
NSN 5895-01-130-0029
NSN 5960-00-892-9475
NSN 6620-00-553-8988
NSN 5998-00-288-1902