1. Aging resistance. He's sealing strip has excellent weather resistance, ozone resistance, heat resistance, acid and alkali resistance, water vapor resistance, color stability, electrical performance, oil-filling and room temperature fluidity. It can be used for a long time at 120 ℃, and can be used briefly or intermittently at 150-200 ℃. Under the conditions of ozone concentration 50pphm and stretching 30%, it can reach more than 150h without cracking.

2. Corrosion resistance. The EPDM sealing strip has good resistance to various polar chemicals such as alcohol, acid, alkali, oxidant, refrigerant, detergent, animal and vegetable oils, ketones and fats, etc.

3. Water vapor resistance. He's EPDM seal has excellent water vapor resistance and is estimated to be superior to its heat resistance. In 230 ℃ superheated steam, there is no change in appearance after nearly 100h

4. Resistance to superheated water. Ethylene-propylene rubber also has good resistance to superheated water. After immersed in 125 ℃ superheated water for 15 months, the mechanical properties change little, and the volume expansion rate is only 0.3%.

5. Good flexibility. EPDM sealing strip has good elasticity and elongation at break