Never dunk your esc in plastic tool handle dip!!!! First off as I understand it they have that conformal coating that prevents water damage so they are splash proof but if your still worried grab a radio box off ebay and bolt it to the chassis then stick your esc in that and if you have to a little plasidip on the wires is ok but most of these little boxes are already sealed. I use a twin force radio box cause its sealed with plenty of room and has these cool little mounting feet on them.