Personally I wouldn't do it. The vasoline could "congeal" under the cold of the TEC which might case air pockets to open up. Also it could drip or slowly flow off of the socket once again opening up air pockets. It won't seal like silicone will. Dude you may want to consider exactly what you're doing here. Adding a TEC to a system is NOT something to take lightly. Honestly if you're not willing to accept the fact that there is a high probability you may fry your CPU or your board with this TEC I would highly suggest you not do it. As fun and as exciting as using a TEC can be it is very dangerous, and accidents do happen no matter how carefull you are, trust me on this
