Guest Posted May 22, 2017 Report Share Posted May 22, 2017 How long do you leave Rust Blast in an aluminum gas tank to etch the surface? Quote Link to comment Share on other sites More sharing options...
KBS Coatings Posted May 22, 2017 Report Share Posted May 22, 2017 RustBlast is an acid etch (think chemical sandpaper) and aluminum tends to be smooth. So, at a minimum, each side of the inside of the tank should be etched at least 30 minutes using RustBlast. The surface needs to be wet for the entire time because RustBlast stops working when the surface dries. Please review the entire Tank Sealer Directions and let us know if you have any additional questions. Quote Link to comment Share on other sites More sharing options...
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