DAP Dynaflex 230 White Waterproof Indoor/Outdoor Sealant, 10.1 oz. is DAP's most advanced latex sealant technology, ing premium elastomeric latex with silicone-like toughness. This sealant combines exceptional durability, adhesion, and flexibility typical of silicone with the easy tooling, paintability, low odor, and water clean-up benefits of latex. It remains highly flexible to accommodate joint movement caused by temperature and humidity changes without cracking. Providing a long-lasting, durable seal, it is waterproof and weatherproof, making it i for sealing air leaks around windows, doors, siding, trim, and baseboards to enhance home energy efficiency and reduce utility costs. The cured sealant resists mold and mildew, suitable for both interior and exterior use, and meets ASTM Specification C920, Class 25. Model Number: 18275