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 6685-00-538-8656
NSN 6220-00-316-2500
NSN 6105-00-080-0648
NSN 6320-01-352-5653
NSN 5895-01-351-3203
NSN 5935-01-392-2227
NSN 5985-01-525-0445
NSN 6110-00-960-7341
NSN 5965-00-959-8162
NSN 5935-00-406-5516
NSN 6150-00-767-2374
NSN 5945-01-612-3093