... Hengda LED Kafuter-5216 Condcutive Paste&Silicone Grease&High Thermal Paste (for High-Power LED Street Lamps,Mine Lamps,Bulbs ) FeaturesHigh thermal conductivity about 2.0 and electrical ... . Potting the gap between CPU and radiator, in high-power tri-tube, controlled silicone components, 4.Coating the gap between diode with aluminum or ...