HIGH-QUALITY SEALANT: Our non-sag polyurethane concrete sealant cures by reacting with air humidity to form a highly elastic expansion joint material. You can use it for jobsites in different locations as this concrete caulk has a very wide service temperature range: -22°F to 175°F. DIFFERENT BASE MATERIALS: This expansion joint filler will help you cover different materials with one sealant. You can use it for expansion joint for concrete, wood, gypsum boards, aluminium & steel, ceramic, etc. HORIZONTAL & VERTICAL APPLICATIONS: Our concrete sealer caulk can be used not only for horizontal applications like construction joints, but also for vertical applications like basement walls. Our concrete caulk is ideal for DIY projects and professional use. EXTRA FEATURES: You can also paint this concrete caulking sealant so that it fits your interior design. You can create comfort at home with this concrete sealant since it also has great acoustic properties & contributes to a more hygienic environment. EASY APPLICATION: Donseal PU440 comes in a 20.2 fl. oz. sausage pack to use with any standard sausage gun, ensuring smooth and consistent application across various projects without pre-mixing. This box also comes with 20 nozzles for easy application. Enhance your experience with our new polyurethane gun, designed specifically for optimal use with Donseal PU440 to boost efficiency and precision in your projects. Donseal PU440 is a one-component non-sag polyurethane sealant that cures by reacting with air humidity to form a tough and highly elastic low modulus sealant. Donseal PU440 has a very wide service temperature range. Suitable for vertical and horizontal joints, Basement walls, Precast concrete elements, For concrete, wood, marble, aluminum, steel, ceramic, gypsum boards, etc.