The Rubber capillary Rheometer RCR 20 is the high-end instrument of rubber testing with a measurement force of 75kN. Both RCR 75 and RCR 20 (measurement force 20kN) are able to work in extrusion and injection mode. The extrusion mode is determining information about the specific flowbehavior of rubber. The second mode is the injection mode, which is analyzing the specific behavior during the process of injection moulding. Operators can change very fast between both of the operation modes. The measurement modes of the GÖTTFERT Rubber Capillary Rheometer, lift rubber testing to a new level close to the processing of rubber compounds.