Johnson-Fluiten R-RH Series Rotary Joints allow you to transfer an under pressure fluid from a stationary part to a rotating part of a machine without leaking.   They are mainly differentiated on the basis of the number of passages, the type of fluid, the operating conditions (pressure and temperature, rotation speed), the environment and the intended use: they are used in plastics plants , in paper and printing industry, in chemical industry, in food production, pharmaceutical applications,