Formulated to create a long-lasting watertight seal with superior flexibility and adhesion to a variety of building materials. When cured, it is mold and mildew resistant and will not crack or shrink. Unlike acetoxy silicone sealants, DAP Silicone Plus Premium Silicone Rubber Kitchen & Bath Sealant is low in odor which makes it easier to work with especially when it comes to indoor applications. Meets ASTM Specification C 920, Class 25, Type S, Grade NS. Backed by a Lifetime Guarantee.