Small high pressure reactor autoclave is suitable for flammable, explosive, high toxic, precious media and chemical media of strong penetration to stir. It is the best no-leak response for petroleum, chemical, organic synthesis, polymer, food and other process to vulcanize, fluorate, oxidize. Application (1) static sealing structure. (2) the mixer bath electrical machinery transmission uses the magnetic force couple connection. (3) no-touch passing moment, solving the stirred leak problem. (4) medium and the stirring member is in sealing state to work. We have three types of high pressure reactor: cjf(without lift), fcf(with lift), cf(without stirring).