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 6130-00-104-8039
NSN 6685-01-105-1356
NSN 5920-01-422-1866
NSN 5905-01-599-7599
NSN 5920-01-541-5030
NSN 5920-00-106-5751
NSN 2925-01-370-6898
NSN 5998-00-366-5591
NSN 4140-00-724-2638
NSN 6650-01-589-3585
NSN 5985-00-244-0842
NSN 6105-00-523-0403