Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 843-0009 found under Gasket by Dietz R E Co. The National Stock Number assigned to this part is 5330004201735, 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 843-0009.