AEM is a durable, low compression set rubber with excellent resistance to high temperature, heat resistant mineral oil, hydraulic oil and weather resistance. ACM has the machining difficulties: sticky, stick the mold, polluted mold, low temperature, poor compression set, but AEM improved these defects.The machining performance and high/low temperature resistance of AEM are better than ACM. Advantages. Good compression set and mechanical properties. Good metal bonding. Good ozone resistance, weather resistance and air tightness. Long-term use at high and low temperatures.