Originally Posted by G2G

I have never used POR in an open environment. However we used it to paint the end plates of our heat exchanger which was cast steel and beginning to rust. We let it sit and set, did all the proper prep, and within an hour of bolting the end plates back on and filling our loop with water, the paint was already peeled away and rusting again. On the flip side one of the other programs used it to coat all of their test stand which supports a well known helicopter drivetrain and have had no problems. But the test stand is also in a sealed warehouse. I would say as long as it's not in an environment where it is constantly exposed to water it apparently works well.



- Hand