No, PTFE (polytetrafluoroethylene) does not react with water. PTFE is a highly inert material known for its chemical resistance, and water does not cause any significant reaction with it. This inertness is one of the key properties that make PTFE suitable for a wide range of applications, including those involving contact with water.

Because of its chemical inertness, PTFE is often used in various water-related applications, such as plumbing systems, water filtration, and fluid handling equipment. It does not degrade or react with water, which helps ensure the integrity and longevity of components made from PTFE in such applications.

In summary, PTFE does not react with water, making it a suitable material for use in environments where it will come into contact with water or other aqueous solutions.