EPDM: How to Compare Peroxide-Cured and Sulfur-Cured?
EPDM O-rings are known for their excellent environmental resistance and extended shelf life. They belong to the family of synthetic elastomers and offer cost-effective steam and chemical resistance, making them ideal for applications involving solvents, acids, and mild chemicals. The choice of rehabilitating EPDM materials depends on the specific end-use application, and factors like chemical, heat, and tensile resistance should be considered when selecting between peroxide-cured and sulfur-cured options.
To elucidate the differences between peroxide-cured and sulfur-cured EPDM, we have outlined some key characteristics of each type to assist you in making the best match for your application:
Characteristics of Peroxide-Cured EPDM:
- Superior resistance to higher temperatures, up to 257ºF.
- Higher tensile strength.
- Lower compression set.
- Enhanced tear strength.
- Aging resistance.
- Compatibility with a wider range of fillers.
- Improved resistance to chemicals and oils.
- Does not stain PVC or metals.
It is worth noting that peroxide-cured EPDM O-rings offer an expanded range of conditions they can withstand, including alcohols, brake fluids, ketones, hot water, and steam (up to 400ºF).
