The WHFS series experimental high-pressure hydrogenation reactor is equipped with a ring-shaped rare earth permanent magnet stirrer, featuring high torque, static seal, no leakage, resistance to high temperature, high pressure, high vacuum, high stirring speed, stable operation, low noise, wide application range, simple operation, and ease of use. It is an ideal device for laboratory hydrogenation or other mixing reactions requiring no leakage. The sleeve is made of self-lubricating materials such as graphite, ceramics, PTFE-filled carbon fiber, suitable for stirring reactions of various materials under different reaction conditions.