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 5920-01-176-1413
NSN 6650-01-200-7657
NSN 2925-01-055-7607
NSN 6240-01-306-6796
NSN 6105-00-737-0829
NSN 5998-01-355-2684
NSN 6650-00-408-3105
NSN 5935-00-004-0232
NSN 5930-01-380-8293
NSN 5990-01-631-1952
NSN 6220-00-816-8131
NSN 5965-01-399-8454