Premium all purpose 100% Silicone Sealant provides maximum flexibility and adhesion to withstand extreme expansion and contraction caused by temperature and weather fluctuations. It has twice the joint movement capability of many other sealants so it won’t crack or shrink, providing a durable, 100% waterproof and weatherproof seal. It is rain and water ready in just 30 minutes and is ideal for a wide variety of applications such as sealing around windows, doors, siding and trim. Silicone Max has a lifetime guarantee and meets ASTM C920, Class 50, for interior/exterior use.