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FUCHS THERMISOL QH 25 is a high-performance, rapid-action quenching oil formulated with highly refined mineral base stocks and specialized additive technology. It incorporates advanced wetting-agent accelerators to provide intense, uniform cooling while minimizing thermal distortion and surface warping in heat-treated components. Its low viscosity reduces drag-out losses when workpieces are removed from the bath, while its oxidation resistance prevents oil degradation, sludge formation, and bath fouling.