Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2231E found under Ring Cylinder by Curtiss Wright Electro Mechanical Corporation Div Steam And Air Solutions. The National Stock Number assigned to this part is 2815006988730, and the Federal Supply Class is 2815 Diesel Engines And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 2231E.