OSI Clear Silicone Construction Sealant - 10 oz

OSI HM270 10.2 oz Clear Silicone Caulk is a professional-grade window glazing sealant designed for outdoor use, ideal for sealing and protecting windows, skylights, solar panels, ventilators, aluminum siding, glass, and HVAC units. This clear silicone adhesive forms a durable, permanently flexible bond that resists moisture, making it suitable for a variety of construction and repair projects. The paste formula is easy to apply and provides excellent adhesion to glass, plastic, and metal surfaces, ensuring long-lasting performance. OSI HM270 is not paintable and should be cleaned up with mineral spirits. It is packaged in a convenient cartridge for easy application and covers up to 31 linear ft. This construction adhesive caulk is recommended for both structural and conventional glazing, as well as sealing ductwork, recreational vehicles, and other assemblies where a strong, moisture-resistant seal is required. OSI HM270 is not mildew or fire resistant, but its clear finish and reliable flexibility make it a trusted choice for demanding outdoor sealing jobs. Choose OSI HM270 for your next window glazing or construction adhesive caulk project.