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. This silicone rubber kitchen and 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.