Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D4209PC12 found under Seal Head by Enertec America Inc. The National Stock Number assigned to this part is 5330000108053, 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 D4209PC12.