Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number JB408-1PC4 found under Packing Preformed by Ernst Flow Industries Inc. The National Stock Number assigned to this part is 5330004044667, 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 JB408-1PC4.