Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M1156-1 IT3 found under Seal Nonmetallic Special Shaped by Derbyshire Mack And Morgan Inc. The National Stock Number assigned to this part is 5330014455597, 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 M1156-1 IT3.