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 6650-01-116-4650
NSN 5985-00-195-9425
NSN 6145-01-504-4252
NSN 5996-00-736-4589
NSN 6320-00-242-3300
NSN 5935-01-581-4659
NSN 5915-01-233-9651
NSN 5835-00-368-4182
NSN 5920-00-675-4952
NSN 6620-01-511-4702
NSN 5945-00-900-7581
NSN 6150-00-049-7597