No idea. I think most of those are paintable silicones or silicone free so who knows. Obviously they are not an issue. Im sure as a finish rep your opting to eliminate any and all possible contamination and over-reaching is likely viewed as good measure. I do tend to think of it in the shop as I have drill presses that will occasionally drill steel... we occasionally run aluminum on the cnc, and every time we grease we wear rubber gloves.
Your lucky you dont do any finishing :-)
I use paraffin for lots of things; I use an old(clothes) iron on my old iron jointer to fill the rust pits with paraffin then buff it with a 1/4 sheet sander. I use it on hand planes (I draw an"8" on the sole), hand saws (just saw into a chunk before and during use). It is also the best screw lube I have used.We use paraffin wax and #0000 steel wool