Reddit reviews Xbox 360 Thermal Pads - 1 Set RAM Thermal K Pads (4 PCS) for XBOX RAM Chips - Upgrade Cooling Repair - Prevent RROD
We found 1 Reddit comments about Xbox 360 Thermal Pads - 1 Set RAM Thermal K Pads (4 PCS) for XBOX RAM Chips - Upgrade Cooling Repair - Prevent RROD. Here are the top ones, ranked by their Reddit score.
I don't think that surface is compatible with paste. I'd say you should look for something like a thermal gap pad.
I found this on Amazon that might be adequate:
http://www.amazon.com/Xbox-360-Thermal-Pads-Upgrade-Cooling/dp/B004CJM9OA/ref=pd_sim_sbs_vg_1
Search for 'thermal pad' or 'thermal gap pad' to find the pads.