Comparison of the stiffness of a standard liquid silicone rubber (blue, on the right) and that of ELASTOSIL^® LR 3003/90 (yellow). Because of its hard-ness – 90 Shore A – and its high dimensional stability, the yellow sheet made of the new silicone rubber hardly bends. WACKER, the Munich-based chemical company, is presenting the new product at the K show in Düsseldorf, Germany, for the very first time.