The main properties of 7157 Style EPDM (ethylene-propylene-diene-monomer) 60 durometer flange gaskets are its outstanding heat, ozone, and weather resistance. The resistance to polar substances and steam are also excellent. It has great electrical insulating properties. It has good resistance to ketones, ordinary diluted acids, and alkalis. 7157 Style EPDM has excellent resistance to oxygen, acids, and aging; outstanding color stability, Odor-free characteristics, high heat resistance and dielectric qualities. All of this makes it ideal for outdoor applications and as a general purpose gasket material for air, hot and cold water, and saturated steam. Epdm rubber gasket material is used for parts in the appliance industry; as low pressure boiler gaskets; weather stripping, boots, dust covers, sleeves, mounts. 7157 Style EPDM gaskets conform easily to uneven flange surfaces, has fair abrasion resistance, good impact strength, excellent resilience and a fair tensile strength. 7157 Style EPDM flange gaskets have proven their long-term reliability over the course of many years.