OSI GS121 Clear Synthetic Polymer Sealant
A friend of mine turned me onto this stuff at Lowes, we both have to re-caulk our campers and are going to try this stuff, he uses this and geocel and says the both of them are about the same. I neve...
Forum Discussion
I wanted to update this thread, I got the back half of my camper done with the OSI product last month and while it is a PIA to work with (you can't smooth it very well) it is holding up well so far, dries super clear, really flexible and sticks well to where I put it on both fiberglass and aluminum.
