... of rotor,chamber,discharge door,ram and others contacting with mixing rubber is plated with chrome or wear-resistant hard metal.4.Hydraulic ... application: E. V. A. Rubber & TPR, Sole, Rubber Roller, Hoses, Belts, Sponges, Sport bolls, Vibration Insulator, Elastic Cord, Sealing Materials, Tire, tapes, Master ...