In all my years of RV'ing I've been told by 3 reputable dealers that silicone is fine as long as it is 100% silicone & not a blend. No, it doesn't flow like Dicor lap sealant but it does seal. I personally wouldn't use it or recommend it as my sealant of choice but in a pinch it works fine. Only problem I've ever encountered is some discoloring. True it might cause a bit of grief down the road because not much will stick to it, but again, as a quick fix it will prevent leak damage. That being said, get the Dicor Lap Sealant.
