Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C4013 found under Seal Plain by Rolls Royce Power Engineering Plc. The National Stock Number assigned to this part is 5330013135679, 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 C4013.