Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 425-7399 found under Packing Preformed by Selas Corp Of America. The National Stock Number assigned to this part is 5330009697115, 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 425-7399.