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Semstone 870 is a high performance, vinyl ester lining system designed for concrete. Semstone 870 is formulated to be more flexible than typical vinyl esters to tolerate more concrete movement. It is a semi-leveling coating which may be applied as an aggregate filled and/or reinforced coating system. Semstone 870 is specially formulated to withstand some of industry’s most aggressive chemicals, including a broad range of organic chemicals. A cooler temperature version (870 CT) is available on special order.