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 5998-00-130-6935
NSN 5945-00-396-1414
NSN 5999-01-335-7122
NSN 5935-01-055-6991
NSN 5960-00-215-5884
NSN 6150-01-051-1678
NSN 5999-01-248-1859
NSN 5835-01-126-2480
NSN 6650-01-292-2963
NSN 6130-01-141-4666
NSN 6650-01-229-7500
NSN 6645-00-408-3537