Tetradecafluorohexane is primarily used as a dielectric fluid in high-voltage equipment due to its excellent electrical insulating properties. It is also employed as a coolant in various electronic and industrial applications, where its thermal stability and non-flammability are highly advantageous. In the medical field, it serves as a contrast agent in diagnostic imaging, particularly in ultrasound, due to its ability to enhance imaging clarity. Additionally, it is utilized in the aerospace industry as a heat transfer fluid in thermal management systems. Its chemical inertness makes it suitable for use in environments where reactivity must be minimized.