The heat resistance of the plate heat exchanger rubber gasket is more important than other physical properties. Therefore, the formula is mainly considered for the heat resistance of the rubber and the compression deformation property at high temperature. Formulation design requires MQ seal mats to withstand temperatures above 200°C. EPDM seals are resistant to hot water or water vapor above 150°C. Most of the heat exchangers use hot water and steam steam for heat exchange.While EPDM is superior to other types of rubber in hot water and water vapor, and the temperature is from l50 to 180℃. Anti-aging agents play an important role in the heat resistance of EPDM compounds. However, not all antioxidants have a role in the peroxide vulcanizate. The use of the anti-aging agent MB not only improves the heat resistance of the EPDM compound, but also improves its water resistance.