EPDM Foam is a high-quality, closed-cell material that is commonly used to create an air and water-tight seal. It is great for use in outdoor sealing applications due to the superior UV and Ozone resistance the material offers. Aside from offering excellent weathering resistance, EPDM also features good flexibility, tensile strength and recovery properties. The closed-cell structure enables the material to handle high-pressure sealing applications at a better rate. The sealing properties of the material can vary depending on the density.