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 5998-01-634-0604
NSN 5935-00-504-5443
NSN 6150-00-156-4581
NSN 5920-01-590-0493
NSN 5990-01-400-3299
NSN 5985-01-610-1879
NSN 5996-00-067-8864
NSN 5965-00-959-4910
NSN 5935-01-634-0668
NSN 5895-00-899-0334
NSN 6105-01-369-6173
NSN 6650-00-168-1502