DAP Dynaflex 230 Pro is a premium elastomeric latex sealant with silicone-like toughness. Black sealant BK009 is color matched to leading window, door and siding colors. DAP sealant combines outstanding durability, adhesion and flexibility with easy tooling, paintability, low odor and water clean-up. It is highly flexible to handle joint movement caused by variations in temperature and humidity without cracking making it an excellent choice for outdoor use. Provides a long-lasting, durable seal that is 100% waterproof and weatherproof. Ideal for caulking and sealing air leaks around windows, doors, siding, trim and baseboards to improve the energy efficiency of a home and reduce utility costs. Features a 4 inch removable nozzle designed to easily access tight corners and hard to reach areas, ensuring efficient and precise application. Meets ASTM Specification C920, Class 25. VOC compliant. Certified to AAMA 802 and 808 standards for installation of windows and doors in all phases of the installation. Interior/exterior use. DAP caulk and sealants provide durable performance for a variety of projects.