Used as a key intermediate in the production of fluorinated surfactants and surface treatment agents. Its unique structure provides excellent thermal stability and chemical resistance, making it suitable for high-performance lubricants in extreme environments. Commonly applied in aerospace, semiconductor manufacturing, and precision instruments where low volatility and high inertness are required. Also utilized in coatings to impart water and oil repellency, especially in industrial textiles and electronic components. Plays a role in firefighting foams due to its ability to form stable, oxygen-excluding layers on fuel surfaces.