What are the Primary Applications for Epichlorohydrin O-Rings

Thanks to their exceptional resistance to fuels, mineral oils, ozone, and oxidative aging, Epichlorohydrin (ECO) O-rings are well-suited for a variety of demanding industrial and automotive applications. Their performance makes them a cost-effective yet high-performing solution in the following applications:

• Automotive Fuel Systems: Epichlorohydrin O-rings are widely used in fuel delivery and containment systems due to their excellent resistance to fuels and fuel additives, along with low swell characteristics.
• Emission Control Systems: Epichlorohydrin O-rings provide reliable sealing in evaporative emission control systems and other critical areas where fuel vapour resistance and thermal stability are essential.
• Industrial Hydraulic Systems: Epichlorohydrin rubber is compatible with a wide range of hydraulic fluids and lubricants. Their low compression set ensures long-term performance under constant pressure and mechanical movement.
• HVAC and Refrigeration: Certain grades of Epichlorohydrin rubber are compatible with refrigerants and compressor oils, making them useful in heating, ventilation, air conditioning (HVAC), and refrigeration systems. Their low-temperature flexibility and resistance to refrigerant oils allow for reliable sealing in fluctuating thermal environments.
• Oil & Gas Handling Equipment: Epichlorohydrin O-rings are used to seal equipment exposed to hydrocarbons, lubricants, and corrosive gases due their ability to resist chemical degradation and maintain flexibility in harsh field conditions.
• Pneumatic Systems: Pneumatic systems often operate under high cycling and require materials that resist cracking, ozone attack, and seal fatigue. Epichlorohydrin O-rings deliver durability and flexibility for compressed air systems used in manufacturing, robotics, and automation.