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8504 CrownFlex is a two-component, paste, 100% solids, semi-rigid epoxy joint sealant, and crack filler. It features a combination of excellent adhesion and elongation not available in general-purpose epoxy. It is formulated to provide concrete joint edges and minimizing the deterioration of concrete joint/crack edge to impact. It is available in standard cure and fast cure. It is used for embedding detector wire loops for a traffic signal, electric gates, and robotics.