BJohnson
Well Known Member
Question:
Is the polysulfide sealant soluable in lacquer thinner, or do I get to rebuild my tanks?
After procrastinating closing out my fuel tanks for 5 years, I finally closed them out and leak tested with a manometer and soap bubbles to find that they are leak free. However, as I went to prep the baffle and end ribs for primer, I found that stray bits of sealant could be removed with a lacquer thinner dampened wipe.
When I closed out the tanks, I used a pre-packaged Semco cartridge, that only required injecting the hardener and mixing. But when I built the tanks I used a digital scale and recommended weight ratios. Comparing the two visually, my hand mixed material is several shades lighter gray, but still a dark gray, than the Semco mixed material, which in nearly black. So now I am concerned that the hand mixed material was not mixed to the correct proportions, leaving the sealant vulnerable to the avgas.
Is the polysulfide sealant soluable in lacquer thinner, or do I get to rebuild my tanks?
After procrastinating closing out my fuel tanks for 5 years, I finally closed them out and leak tested with a manometer and soap bubbles to find that they are leak free. However, as I went to prep the baffle and end ribs for primer, I found that stray bits of sealant could be removed with a lacquer thinner dampened wipe.
When I closed out the tanks, I used a pre-packaged Semco cartridge, that only required injecting the hardener and mixing. But when I built the tanks I used a digital scale and recommended weight ratios. Comparing the two visually, my hand mixed material is several shades lighter gray, but still a dark gray, than the Semco mixed material, which in nearly black. So now I am concerned that the hand mixed material was not mixed to the correct proportions, leaving the sealant vulnerable to the avgas.