John, I didn't even look! But I don't believe it's leaking from that one anyway. It looks like it's leaking from the most unlikely one to leak. The reservoir seal it's self, no moving parts, one large O ring that goes around the whole thing. It's bolt is as tight as I can get it without clamping the thing in a vice and tightening it. I am going to have to pull it apart and see if somehow the inside of that O ring isn't pinched weird or something.