Geocel ProFlex. Comes in Clear, Ultra Clear, Almond, White and Black. Probably one of the best sealants on the market for everything except the roof itself. Very sticky stuff, but very good. Can be found at most RV places, Camping World, or any other online retailer.
John and Rebecca Dickson
Emma-7 / Little John-5 / Iva-1
Full Timing Again, Rev B
2013 Ford F-350 Lariat CC LB PSD
2015 SOB TT - With OC's Awning Poles (#8)
At least in Heaven, RVs will be perfect, and I won't have to keep fixing them.