High-temperature alloy sealing ring with surface coated with soluble polytetrafluoroethylene

The utility model relates to a high-temperature alloy sealing ring with the surface coated with soluble polytetrafluoroethylene. The high-temperature alloy sealing ring is composed of a framework and a protective layer arranged on the surface of the framework. The framework is a high-temperature alloy pipe with a hollow structure, and the protective layer is a soluble polytetrafluoroethylene coating layer; the high-temperature alloy pipe is bent to form an annular structure; the diameter of the high-temperature alloy pipe is 3 mm to 5 mm, and the thickness of the pipe wall is 0.4 mm to 0.5 mm; and the thickness of the soluble polytetrafluoroethylene coating layer is 0.05 mm to 0.15 mm. The sealing ring is an O-shaped circular ring of a closed structure, and the diameter of the circular ring ranges from 50 mm to 1200 mm. According to the utility model, the soluble polytetrafluoroethylene material is coated on the surface of the sealing ring by adopting an electrostatic spraying process to form a protective lay