Royalene 525 Ethylene-propylene diene terpolymer Crompton-Uniroyal Chemical Rubber - Elastomer >> Ethylene-propylene diene terpolymer, EPDM ROYALENE ® 525 " An Ultra Fast Curing Polymer for Automotive Extrusions " High unsaturation - Ultra fast cure rate Excellent compression set resistance in closed cell sponge extrusions Excellent low temperature properties Co-cures well with SBR Non-staining Friable bale form for rapid mixing in internal mixers and excellent dispersion properties Excellent weathering resistance Closed cell sponge profile extrusions Closed cell sheet sponge Automotive window channel extrusions Royalene® 525 EPDM is a terpolymer of ethylene, propylene and a non-conjugated diene (ENB). This medium Mooney, ultra-fast curing polymer offers exceptional low temperature properties and also excellent compression set resistance. It is manufactured in friable bales for rapid mixing. The primary applications for Royalene 525 are automotive flocked window channels, closed cell sponge profile extrusions, and sheet sponge. Non-staining, ultra fast curing ethylene-propylene diene terpolymer (EPDM). Provides medium Mooney viscosity, very good low temperature properties, compression set and wheathering resistance. Co-cures well with SBR.