ITEM NAME:100mmx100mmx0. 5mm GPU CPU Heatsink Cooling Thermal S0T4 conductive Pad Sil N3D8 Description & Preview.Material: thermal silicone rubber. Thermal conductivity: 1.5 W ~ 5.2 W. You can follow below process to chontact us. All pictures are for illustration purpose only and Colours may vary slightly. Import Duties.