Hexadecylcyclohexane is primarily used as a synthetic lubricant base oil due to its excellent thermal stability and low volatility. It is often employed in high-temperature applications, such as in industrial machinery, automotive engines, and aerospace systems, where it helps reduce friction and wear. Its chemical structure provides resistance to oxidation, making it suitable for use in environments with prolonged exposure to heat. Additionally, it is utilized in the formulation of greases and specialty oils for extreme conditions. Its non-reactive nature also makes it a candidate for use in certain electronic cooling systems and as a heat transfer fluid.