Royalene 662 Ethylene-propylene diene terpolymer Crompton-Uniroyal Chemical Rubber - Elastomer >> Ethylene-propylene diene terpolymer, EPDM ROYALENE ® 662 " A High Performance Sponge Polymer " Ultra fast cure rate Outstanding compression set properties Improved low temperature resistance Excellent green strength for extruded profile shape stability Improved abrasion resistance and tear strength Improved resistance to bloom Friable bales for rapid Banbury mixing and excellent dispersion Smooth extrusions at low temperature (150ºF/65ºC) Automotive dual durometer extrusions Royalene® 662 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 662 are closed cell sponge profile extrusions,sheet sponge, and flocked window channels. Ultra fast curing ethylene-propylene diene terpolymer (EPDM). Provides medium Mooney viscosity, improved low temperature properties, outstanding compression set properties, very good green strength for extruded profile shape stability, improved abrasion resistance, tear strength and resistance to bloom.