T pad 6500 ultra thermally conductive pads universal science t pad 6500 4 4 the t pad 6500 is a non silicone electrically isolating thermal interface material that features an exceptionally high 6 5w mk of thermal conductivity the pad is perfect for rugged and demanding applications as well as silicone sensitive applications the inherent softness in the pad allows it to fill in the micro air voids between contact surfaces and its rugged construction stands up to demanding environments univ