12 Pack, Gray, Zinsser WaterTite Polyurethane Sealant for Concrete and Masonry-5091DSV, 10.1 oz Cartridge

Single component polyurethane sealant and joint filler remains flexible over time Fills deep cracks and holes on a variety of concrete and masonry surfaces Durable, long-term adhesion that does not diminish over time Tack free in 72 hours maximum Apply to cracks 0.5” wide or less. Cracks over 0.25” in depth must be filled with backing material or filler before applying Polyurethane Sealant.