Used primarily in vacuum pumps to ensure efficient operation by providing lubrication to moving parts, reducing friction, and preventing wear. It helps maintain a high vacuum level by sealing gaps and minimizing backstreaming of contaminants. Commonly applied in industries like pharmaceuticals, electronics, and laboratories for processes requiring clean, consistent vacuum environments. Also used in HVAC systems, refrigeration, and semiconductor manufacturing to enhance performance and extend equipment lifespan. Its thermal stability and low vapor pressure make it suitable for high-temperature and low-pressure applications.