Parameters: maximum pressure: 1.8MPa maximum temperature: 220 ° C maximum speed: 100rpm Suitable medium: saturated steam, superheated steam, water, superheated water structural features: such rotary joint drying equipment for drying industry biconical specially designed production . The use of reliable spherical friction seal structure, able to automatically aligning, the automatic compensation, but with a lower rotational accuracy, concentricity bad device; the internal only four parts, such a simple and effective structure it maintenance more convenient; reliable material guarantee and after lapping spherical bottom plane, able to provide adequate service life.