Just curious, mostly...but looking ahead to some future mods that require pieces that will cover the jeep's painted surfaces (rock rails, overhead rack systems, etc.) that may not be permanent, I'm trying to figure out what would keep the water out from in-between and prevent rust, while not totally screwing up the paint...
The factory only uses that rubber gasket around the stock rock rails, but it seems like water/crud/salt/mud could easily make a nasty home there...however, it may be the lesser of 2 evils to use the rubber vs. RTV to seal that area...
With the RTV, I do the top and both sides with RTV, and leave the bottom open, for drainage, and air to dry. I haven't had problems in the past doing it that way. It also provides a little cushion. Rubber on the other hand can get grains of dirt from mud under it, and grind right through the paint. HTH
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