Structural features: Using spherical seal friction, oil-free bearings supported and positioned. After the wearing of the two ends of seal (one-way only one side), it will be compensated by means of spring pre-load at any time, while the case moves back slowly along the bearing. Spherical seal friction own greater freedom in the gap to the extent permitted, so the installed accuracy is not required, the hollow shaft and equipment synchronized movement, the shell is relatively static, hollow shaft, ball and ball seat spring seal ring relative to the formation of spherical friction, wear ring seal to a certain thickness, put a new one to work. Fluid from the shell into the hollow shaft openings, the flow of equipment, leads from the inner tube (not one-way), but also in turn work, rotating joint cavity in the fluid medium can also be reached by mutual isolation. Parameter: Maximum pressure: 1.6Mpa Maximum temperature: 220 ℃ Maximum speed: 100r/min Applicable medium: water, steam, oil etc