Thermal Paste

Thermal paste (also known as Thermal Grease or Thermal Compound) is a thermal interface material which is used to fill voids between heat sources and heat sinks. Thermal pastes are typically made up of a mixture of thermally conductive fillers, such as aluminium oxide, silicon dioxide, and boron nitride, suspended in a carrier fluid, such as a silicone oil or water. The fillers are chosen to maximize thermal conductivity while minimizing electrical conductivity.