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 4140-01-197-8148
NSN 5960-01-258-5615
NSN 5915-00-920-6700
NSN 5920-01-348-5986
NSN 5935-01-654-2320
NSN 5855-00-165-3093
NSN 5835-01-192-4165
NSN 5935-00-139-3441
NSN 6620-01-352-5640
NSN 5920-01-047-7904
NSN 5996-00-050-6570
NSN 5950-00-150-4772