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 5935-01-604-9542
NSN 6320-00-456-0836
NSN 6110-00-846-4579
NSN 6150-01-114-0307
NSN 6650-00-411-1403
NSN 5998-01-337-0192
NSN 6320-01-036-2598
NSN 5975-00-023-1937
NSN 5935-00-139-1670
NSN 6320-00-593-0379
NSN 5960-01-512-0233
NSN 5835-01-534-3172