OSI H2U Window, Door, & Siding Sealant (Carton of 12)

OSI H2U Window, Door, & Siding Sealant is a high-performance, versatile sealant designed for both interior and exterior applications. Its superior acrylic urethane formula offers exceptional adhesion, flexibility, and durability, making it ideal for sealing around window and door frames, sill plates, electrical and plumbing penetrations, and other areas prone to water and air infiltration. This OSI H2U acrylic urethane sealant is engineered to create long-lasting, watertight seals on siding, trim, and other surfaces. Once applied, OSI H2U dries to a glossy sheen, enhancing the finished appearance of your project. Formulated for flexibility, it provides 25% joint movement making it ideal for new construction that will likely experience settling. Made of a UV and water-resistant formula, H2U will not crack or yellow.