SparesBimetallic Screw and Barrel Nitride Screw and Barrel Ring plunger Granulator Blades Shutoff Nozzle Hydraulic Manifolds Platens Hydraulic Cylinders Ring plunger Our Ring plungers are made from durable heat resistant material to withstand the high temperature. Commonly used materials include EN41B and H13. Well designed for efficient plastification. Maintains consistent shot volume & pressure. Back