The 212 All-Purpose Crystal Clear Sealant adheres to a variety of construction materials, including wet and marine surfaces, while providing a seal that remains flexible, even in low temperatures.The one-part, high-performance, thermoplastic sealant cures with a tack-free skin within 30 minutes; temperature range is -20° to 160°F. The sealant does not require primer and suits most common building materials to prevent or stop leaks. It will adhere to properly prepared surfaces of concrete, masonry, steel, aluminum and other nonferrous metals, glass, fiberglass, and wood. — Henry Co., 800/486-1278; www.henry.com