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 6685-00-505-5470
NSN 6320-01-330-2138
NSN 5835-01-486-4191
NSN 6130-01-467-2511
NSN 6650-00-820-4577
NSN 6620-01-519-2628
NSN 5895-01-567-5663
NSN 5920-01-381-8905
NSN 5915-01-551-0745
NSN 5998-01-523-5549
NSN 6150-00-382-1770
NSN 5925-00-204-8204