EPDM (Ethylene Propylene Diene Monomer) rubber is widely used in automotive cooling systems because of its good resistance to coolant water, low temperature, and heat. These characteristics make EPDM an ideal choice for o-ring and gaskets in cooling hose, water pump, water valve.
Key Applications of EPDM Seals in Cooling lines:
SAE/NW Quick Connectors:
EPDM seals are essential for ensuring leak-free connections in SAE and NW standard quick connectors. These connectors are responsible for the swift and secure assembly of cooling hoses, enabling efficient coolant flow throughout the system. The flexibility and durability of EPDM O-RIngs ensure a reliable sealing, even with low temperature to -50℃.
Water Pump Seals:
The water pump circulates coolant through the engine or battery, helping control its temperature. EPDM rubber seals provide a secure, leak-proof barrier in the water pump, withstanding the constant vibration and heat generated during operation. Its chemical stability in the presence of coolants makes EPDM particularly well-suited for this application.
Water Valve Gaskets:
Water valves control the flow and distribution of coolant water into different cooling lines. EPDM gasket is used for sealing water valves due to its resilience under repeated exposure to coolant fluids and varying temperatures, ensuring the valve maintains efficient flow control without leaks.
Bonded EPDM and PTFE gasket are used in water valve to gain a good sealing and low-friction surface.
Air conditioning system:
EPDM is used for gaskets and seals for the air condition hose and connectors.
OBT has developed a specialized EPDM rubber with 80ShA hardness that is optimized for automotive air conditioning systems. This EPDM material exhibits good resistance to refrigerants and lubricants such as POE oil and PAG oil.It could replace HNBR for better cost.
EPDM’s cost-effectiveness compared to other materials, such as silicone or HNBR, adds value to automotive applications by balancing performance with economic benefits.
For more information about EPDM o-ring or gasket and their applications, please contact OBT Rubber Seal.
