DuPont™ Concrete & Masonry Caulk made with Kevlar® DuPont™ Concrete & Masonry Caulk made with Kevlar® is a high quality acrylic sealant. It can be used on a wide variety of surfaces, delivering excellent adhesion and durability. It forms a flexible, water resistant seal.  DuPont™ Concrete & Masonry Caulk made with Kevlar® is designed for filling and sealing cracks and non-structural gaps.  It is an excellent product for use with general repair on masonry, sidewalks and similar mortar applications. Exceeds the requirements of ASTM-C834. Item Number Item Description Color Order Qty 07865 CONCRETE & MASONRY CAULK WITH KEVLAR® 10.1 OZ CARTRIDGE GRAY 12