Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MBL1012D63 found under Seal by Pall Corporation. The National Stock Number assigned to this part is 5330011436813, 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 MBL1012D63.