EPDM 70A is a commercial-grade rubber material engineered for reliable performance under continuous stress and environmental exposure. Unlike nitrile or neoprene, which contain reactive double bonds that can degrade over time, Rubber-Cal EPDM 70A features a saturated polymer backbone, often enhanced with a durable EPDM/SBR blend. This structure provides excellent resistance to UV radiation, ozone, and oxidation, helping the material maintain its flexibility and sealing performance in demanding outdoor conditions. With a nominal 70 Shore A durometer, EPDM 70A offers an ideal balance of toughness and flexibility. It is firm enough for sealing and load-bearing applications while remaining resilient enough to absorb vibration and mechanical shock. Its 300% elongation allows it to stretch under stress and return to its original shape without permanent deformation, making it an excellent choice for gaskets, seals, and protective liners. The SBR component enhances physical durability, helping the material withstand the demands of industrial and construction environments. Available in thicknesses from 1/32 in. to 1 in., EPDM 70A can be easily integrated into a wide range of applications. Choosing Rubber-Cal EPDM 70A provides a dependable, long-lasting solution for challenging physical and environmental conditions. Color: Black. Material: EPDM rubber.