A standard EPDM  sheet with a 70 Shore A hardness rating is another common specification for EPDM rubber sheetings. The Shore A hardness scale measures the hardness of rubber and elastomeric materials, with a rating of 70 indicating a slightly firmer material compared to 60 Shore A.

Here are some key characteristics of a standard EPDM sheet with a 70 Shore A hardness rating:

1. Moderate Firmness: A Shore A hardness of 70 indicates a moderately firm rubber material. This level of hardness provides a balance between flexibility and stiffness, suitable for applications requiring moderate compression and resistance to deformation.

2. Flexibility and Elasticity: Despite its slightly firmer hardness, standard EPDM sheeting with a 70 Shore A rating remains flexible and elastic. It can be compressed, stretched, and molded to conform to surfaces and shapes while maintaining its integrity.

3. Weather Resistance: EPDM rubber is known for its excellent weather resistance, including resistance to ozone, UV radiation, and temperature extremes. A standard EPDM sheet with a 70 Shore A hardness rating maintains this weather resistance, making it suitable for outdoor applications.

4. Chemical Resistance: EPDM rubber exhibits good resistance to a wide range of chemicals, making it suitable for applications where exposure to harsh chemicals is expected. It resists degradation and deterioration under exposure to acids, alkalis, solvents, and oxidizing agents.

5. Tear Resistance: EPDM rubber sheeting with a 70 Shore A hardness rating offers good tear resistance, withstanding mechanical stress and abrasion without tearing or puncturing. This property contributes to its durability and long service life in demanding applications.

6. Temperature Range: EPDM rubber sheetings with a 70 Shore A hardness rating typically have a temperature resistance range similar to that of other EPDM formulations, around -40°C to 130°C (-40°F to 266°F), depending on the specific formulation and application requirements.

7. Applications: Standard EPDM sheetings with a 70 Shore A hardness rating are commonly used for various sealing, gasketing, and cushioning applications where moderate firmness and resilience are required. They are suitable for use in automotive, construction, manufacturing, and other industries.

Overall, a standard EPDM sheet with a 70 Shore A hardness rating offers a good balance of firmness, flexibility, and durability, making it suitable for a wide range of sealing and cushioning applications in various industries.