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 6105-00-846-9240
NSN 6320-01-607-1491
NSN 5965-01-385-7813
NSN 5996-01-028-7884
NSN 6650-01-567-1933
NSN 6620-01-050-2866
NSN 5920-00-325-3980
NSN 6110-01-338-0599
NSN 6610-01-153-0700
NSN 5925-01-150-4559
NSN 5835-00-707-6266
NSN 6220-01-454-4022