Dap Silicone Plus, 12 Piece, Premium Silicone Rubber Concrete & Masonry Sealant Formulated To Create A Long Lasting Watertight & Weatherproof Seal With Superior Flexibility & Adhesion To A Variety Of Building Materials Making It Ideal For Filling & Sealing Cracks & Gaps, When Cured, It Is Mold & Mildew Resistant & Will Not Crack Or Shrink, Unlike Acetoxy Silicone Sealants, Low In Odor, Meets ASTM Specification C 920, Class 25, Type S, Grade Ns, Backed By A Lifetime Guarantee, True Value #576-056 UPC:0 70798 08675 3 SR @ $ 6.09.