AmeriPolish SR2 is a penetrating stain repellant specifically formulated to protect polished, dyed, and non-dyed concrete from oil, water-based stains, and acidic etching agents. The water and oil repelling qualities of SR2 provide superior stain protection on most substrates. SR2 can be used as a standalone product but, to obtain optimum performance, is recommended for use with AmeriPolish 3D HS or 3D HSL Densifiers. Non-topical penetrating sealer. Treated surfaces 'breathe' and do not trap moisture. Excellent stain repellency for residential, commercial, and even industrial applications. Extreme hydroponic and oil phobic characteristics for maximum stain resistance. Coverage rate is approximately 2,000 - 3,000 sq ft per gallon.