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 5920-01-217-8335
NSN 6110-01-385-3193
NSN 6240-01-401-5340
NSN 5965-00-815-2525
NSN 5935-01-193-8434
NSN 5999-01-223-0831
NSN 5985-01-541-4797
NSN 5990-01-379-7999
NSN 5915-01-641-7105
NSN 5985-01-634-0635
NSN 7035-01-359-1761
NSN 6610-01-140-1023