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 5945-01-100-3422
NSN 5935-00-620-4717
NSN 5920-00-369-0923
NSN 5915-00-099-0347
NSN 5835-01-604-7489
NSN 5915-01-564-8906
NSN 6145-01-106-7056
NSN 5975-01-513-6005
NSN 5965-01-035-5475
NSN 5945-01-365-6355
NSN 5910-00-900-2764
NSN 6650-01-476-0134