Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MB500864 found under Seal Plain Encased by 2Mb International. The National Stock Number assigned to this part is 5330013151543, 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 MB500864.