Color : Gray Thermal Conductivity : >4.8 w/m-kSpecific Gravity: >2.3 g/cm3 Operation Temperature : -50~200°CProduct features: Apply to RoHS environmental protection requirements. High thermal conductivity， effective insulation，high temperature resistant， low oil departs non-corrosive.Working principle: Fill the gap between heating element and the cooling device; Increase the contact area， so as to achieve the soundest effect of thermal conductivity.ethod of use: It's normal phenomena， there is a little silicone oil floating above. Please stir well before use. Keep be painted surface clean1 PC Thermal Grease