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 5999-00-117-4567
NSN 5945-01-305-5203
NSN 6320-01-296-3181
NSN 5998-00-087-4479
NSN 4140-01-358-1104
NSN 5960-01-599-9821
NSN 6130-00-284-1629
NSN 6240-00-737-2775
NSN 6105-01-392-1539
NSN 5990-01-303-6110
NSN 5945-00-272-8958
NSN 5990-01-481-3080