Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 639E623G01 found under Seal Assy Secondary by Associated Aircraft Supply Co. The National Stock Number assigned to this part is 2840009459294, 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 639E623G01.