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 6650-00-983-6722
NSN 5960-00-365-6183
NSN 5998-00-139-8030
NSN 6110-01-423-9193
NSN 5945-00-283-8760
NSN 6110-00-596-9124
NSN 5855-01-328-3541
NSN 5920-01-165-6881
NSN 5905-01-149-4879
NSN 6110-01-433-5000
NSN 5935-01-492-6444
NSN 6685-01-482-9173