10.1 OZ, Gray, Polyurethane Concrete & Masonry Sealant, Specially Formulated To Provide A Permanent, Waterproof Seal When Filling Exterior Gaps & Cracks In Concrete, Stone & Masonry, High Performance Sealant Offers Superior Adhesion To A Wide Variety Of Substrates & Remains Permanently Flexible, Paintable, 50 Year Durability Guarantee, Meets Or Exceeds Federal Spec TT-S 00230C, Type II, Class A & ASTM C 920, Type S, Grade NS, Class 25, Ideal For Use On Joints, Foundations, Sidewalks, Patios & Driveways.