Round Tefon Seal is a type of seal that is made from Tefon material and is designed to create a leak-tight seal between two surfaces in a variety of applications. Tefon, also known as PTFE (polytetrafluoroethylene), is a high-performance material that is resistant to chemicals, heat, and friction. Round Tefon seals are commonly used in industries such as aerospace, automotive, and chemical processing where there is a need for high-performance sealing solutions.