Full definition
EPDM (ethylene-propylene-diene monomer) rubber sheets are high-performance elastomer materials widely recognized for their exceptional weather and environmental resistance. This type of rubber sheet is particularly advantageous in applications exposed to harsh climatic conditions due to its superior resistance to ozone, UV radiation, and extreme temperatures ranging from -50 to +150°C continuously. The structure of EPDM rubber includes a diene component that allows for vulcanization, enhancing its durability and elasticity compared to other rubber options. This makes it an ideal choice for outdoor applications where prolonged exposure to the elements is inevitable, such as roofing membranes and outdoor gaskets.
In terms of chemical compatibility, EPDM exhibits good resistance to a variety of substances including dilute acids, alkalis, and certain alcohols. However, it is not suitable for use with mineral oils, greases, and hydrocarbon solvents, as these can cause the material to swell and degrade. This characteristic must be considered when selecting EPDM for specific applications, especially in industrial environments where exposure to such substances is common. The standard thicknesses for EPDM sheets range from 1.5 mm to 12 mm, with availability up to 25 mm for specialized applications, and they typically come in widths of 1,000 mm to 1,500 mm.
The hardness of EPDM sheets can vary from 40 to 80 Shore A, with elongation capabilities of 300% to 500%, making them flexible yet robust. Common colors include black, which is standard, and white, which is FDA-approved for food-grade applications. EPDM sheets can also be reinforced with one or two plies of fabric to enhance tensile strength and reduce elongation, providing additional durability in high-stress applications. As a versatile material, EPDM is utilized in various sectors, including construction, automotive, and HVAC, making it a staple in the industrial supply market, alongside brands such as Warco Biltrite, Rubber-Cal, Fairprene, Reglin, and Rexon.