Polychlorotrifluoroethylene (PCTFE) is a fluoropolymer widely used in applications requiring high chemical resistance and excellent barrier properties. It is commonly employed in the production of seals, gaskets, and linings for chemical processing equipment, where it effectively resists corrosive substances. PCTFE is also utilized in the pharmaceutical and food industries for packaging, as it provides an impermeable barrier to gases and moisture, ensuring product integrity. In the aerospace sector, it is used for components that demand low outgassing and stability under extreme conditions, including aircraft parts and military equipment. Additionally, PCTFE finds application in electrical insulation, such as in cables, due to its dielectric properties and resistance to environmental stress. Its transparency and UV resistance make it suitable for optical components and coatings in specialized industries, while it also serves as a coating in electronics to protect against moisture and harmful chemicals, and in pipes and valves for hazardous chemical systems to extend equipment lifespan and reduce corrosion risks.