Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MBEU978F5 found under Packing Preformed by Martin Baker America Inc. The National Stock Number assigned to this part is 5330001163974, 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 MBEU978F5.