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Flash rust after Rust Blast

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I'm cleaning and sealing the fuel tank on my Triumph TR8.  I did the cleaning, then Rust Blast according to the instructions, but I started getting flash rust immediatly after rinsing after the Rust Blast.



Is it OK to put the sealer over the flash rust?  I thought the Rust Blast was supposed to leave a phosphate coating to inhibit rust.



As long as you have followed the directions including letting the RustBlast soak on each side for a minimum of 30 minutes in temperatures between 55 and 80 degrees Fahrenheit, rinsed the RustBlast out, allowed the tank to get bone dry and have the tank at room temperature, you can proceed with the Tank Sealing Step.  It is not  necessary to remove every last bit of flash oxidation before proceeding to the Tank Sealer step.



You can read the complete directions here: http://www.kbs-coatings.com/tank-sealer-directions.html


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