I have a metal T fitting at the lowest point in my loop for draining. The problem is it hangs low enough to block my first PCI-E slot. So far I just used the second slow, but I am planning on adding a second graphics card and this will make the fitting rest on the back of the card. I was thinking of just wrapping a small amount of cling film around the fitting to insulate it and stop it shorting. Would this be enough to insulate it, also would there be any risk of the card melting the tubing?