Viton® and EPDM are elastomers that are commonly used for O-rings. Both are types of rubber polymers that are compounded for low compression set. This means that they will recover well after a fixed time under specified squeeze at a given temperature. Both elastomers are also highly flexible and can be stretched to a great extent, without breaking. Such elastomers are commonly used as gasket material, but are also employed for making valves, pumps, and related components.
Viton® rubber is a fluoro elastomer, whereas epdm rubber is ethylene-propylene-diene-monomer. The primary differences between Viton® and EPDM is in their chemical resistance and temperature ranges. Both have different properties and applications for general industrial use. Having sufficient knowledge of the differences between the two can help you make a better-informed decision. Continue reading