The difference between fluorine rubber and EPDM rubber in sealing applications is as follows:
1. Chemical resistance: fluorine rubber has a high degree of chemical stability, capable of strong acid, strong alkali and a variety of organic solvents, while EPDM rubber is weak.
2. High temperature resistance: the high temperature resistance of fluorine rubber is better than EPDM rubber, fluorine rubber gasket can work for a long time at the temperature of 200 ° C ~250 ° C, and EPDM rubber gasket usually can only work below 150 ° C.
3. Oil resistance: Fluorine rubber can resist a variety of oils and organic solvents, while EPDM rubber can not contact oil substances, will expand or be eroded after contact.
4. Aging resistance: Fluorine rubber has excellent performance in weather resistance, ozone resistance, heat resistance, acid and alkali resistance, water vapor resistance, etc., while EPDM rubber has weak performance in these aspects.
5. Price: Compared with fluorine rubber, EPDM rubber prices are usually lower, which makes EPDM rubber more competitive in some application scenarios.
In summary, fluorine rubber has excellent performance in chemical resistance, high temperature resistance and oil resistance, while EPDM rubber has certain advantages in price and aging resistance. The choice of material as a sealing material depends on the specific application scenario and the desired properties.