Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 618684 found under Plate Seal Compress by O A Inc. The National Stock Number assigned to this part is 2840003251428, and the Federal Supply Class is 2840 Gas Turbines And Jet Engines Aircraft Prime Moving And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 618684.