​​​​​​​​​​​Original vintage magazine ad for X LABORATORIES, INC  repair leaks, flush boiler.  Keep boilers 100 percent efficient, make fuel produce maximum heat. X-liquid, X-flush, and X-rustoff available to help you do this patriotic job for the World War 2 effort.
Main office was located at 25 West 45th Street, New York City, NY.
​This unique 1942 old one page WWII trade advertisement would display beautifully matted and framed.