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XL XAC is a solvent free, fluid grade poly-ceramic coating and surfacing compound for fluid flow environments. Easily applied by brush, it is the finest material available for repairing and preventing erosion/corrosion damage caused by fluid flow and entrained solids, impingement and bimetallic action. Specially formulated to resist abrasive erosion, it is virtually non-machinable even with carbide tipped tools.