Perfluoropolyether carboxylic acid is widely used in the production of advanced lubricants due to its exceptional thermal and chemical stability. It is particularly valuable in high-temperature environments, such as aerospace and automotive industries, where traditional lubricants fail. Additionally, it is utilized in the formulation of coatings and surface treatments, providing water and oil repellency to materials like textiles and electronics. Its unique properties also make it suitable for use in the manufacturing of specialized polymers and elastomers, enhancing their durability and performance in demanding applications. Furthermore, it plays a role in the development of fire-resistant materials, contributing to safety in various industrial settings.