Peroxide-cured EPDM sheeting is a type of EPDM rubber material that undergoes a curing process using peroxide as the curing agent. This process, known as peroxide vulcanization or curing, involves the use of organic peroxide compounds to initiate cross-linking reactions within the EPDM polymer chains, resulting in a more stable and durable material.

Here are some key features and considerations of peroxide-cured EPDM sheeting:

1. Enhanced Properties: Peroxide curing results in EPDM sheeting with enhanced physical and mechanical properties compared to sulfur-cured EPDM. This includes improved heat resistance, compression set resistance, and resistance to aging and weathering.

2. Temperature Resistance: Peroxide-cured EPDM sheeting exhibits excellent temperature resistance, withstanding continuous operating temperatures ranging from approximately -40°C to 150°C (-40°F to 302°F), depending on the specific formulation and application requirements. This makes it suitable for use in both high and low temperature environments.

3. Chemical Resistance: Peroxide-cured EPDM sheeting offers good resistance to a wide range of chemicals, including acids, alkalis, solvents, and oxidizing agents. It resists degradation and deterioration under exposure to these substances, ensuring long-term performance in demanding applications.

4. Weather Resistance: Peroxide-cured EPDM sheeting maintains excellent weather resistance, including resistance to ozone, UV radiation, and temperature extremes. This property makes it suitable for outdoor applications where exposure to the elements is common.

5. Compression Set Resistance: Peroxide-cured EPDM sheeting exhibits improved compression set resistance compared to sulfur-cured EPDM, meaning it retains its original shape and properties better under compression over time. This makes it suitable for sealing and gasketing applications where maintaining a tight seal is critical.

6. Flexibility and Elasticity: Despite its enhanced properties, peroxide-cured EPDM sheeting remains flexible and elastic, allowing it to conform to irregular shapes and surfaces. It can be easily molded, stretched, and fabricated into various forms, including gaskets, seals, and liners.

7. Applications: Peroxide-cured EPDM sheeting is used in a variety of applications where superior temperature resistance, chemical resistance, and durability are required. Common applications include gaskets, seals, O-rings, expansion joints, roofing membranes, and automotive components.

Overall, peroxide-cured EPDM sheeting offers a reliable and durable solution for demanding applications where enhanced performance characteristics are needed, ensuring long-term durability and reliability in challenging environments.