Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NK1512-1 found under O Ring by Curtiss Wright Electro Mechanical Corporation Dba Steam And Air Solutions Div Cu. The National Stock Number assigned to this part is 5331014679248, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NK1512-1.