Wow. What did he use, tub and tile silicone? I mean I would use either red or blue rtv. And its not that terrible, but use some common sense. Argh. If you have to reuse the O-ring try heating it up in boiling water to make it a bit more pliable. I will normally put a lite coat to hold the o-ring. But that there looked silly. Maybe he fixed the water pump seal the same way.