Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FLEX-RING JOINT 8 found under Pipe Metallic by American Cast Iron Pipe Co. The National Stock Number assigned to this part is 4710016199917, and the Federal Supply Class is 4710 Pipe Tube And Rigid Tubing. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like FLEX-RING JOINT 8.