Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A02PS423-1 found under Gasket by The Boeing Company. The National Stock Number assigned to this part is 5330008289815, and the Federal Supply Class is 5330 Packing And Gasket Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like A02PS423-1.