Thermally Conductive Adhesive Silicone Sealant Bond Peltier, CPU, High-Power LED, Video Chip to the Heatsink, etc. In addition to being a phenomenal silicone adhesive, this glue is reworkable unlike other thermally conductive epoxy options. High Thermal Conductivity: >1.2W/mºC Tack Free Time: 2 Hours Cure Time: 24 Hours Working Temperature: 25ºF to 455ºF (-3ºC to 235ºC) High Strength, Flexible, Non-Corrosive, Flame Retardant One-Part Silicone, No-Mixing Needed Dielectric Strength: 500V/mil Net Weight: 4.0 oz (113.5 g) Lead-Free/RoHS Complaint Please Note: This is NOT thermal grease! This is silicone glue that provides permanent thermal as well as mechanical bond between two devices. It is rather difficult, although not entirely impossible, to separate the devices once the glue cures.