Weatherproof silicone sealant for construction is a one part, neutral cure, specially designed for general glazing and weather-sealing walls and building facades. It can easily be extruded at wide range of temperatures and cures with moisture in the air to form a premium performance elastic silicone rubber. Features excellent adhesion to most construction materials without primer. Typical properties: Inner packing: 305ml/plastic tube 500ml/pack Outer packing: 24pcs/ctn