Its original name is ethylene propylene rubber. The first feature that comes to mind as a polymer type when it comes to what is Epdm rubber is that it has a low glass transition temperature. This substance is highly resistant to heat, oxidation, ozone and atmospheric conditions. In addition, phosphate, glycol-based brake oils, water vapor, ozone and weather conditions are a substance with a very high resistance level. The degree of use varies between -40 and 150 degrees.