The Bostik S21 Acetoxy Multipurpose Silicone Sealant in clear is a versatile product thats suitable for a wide range of sealing and bonding applications. It is a high-performance, one-component sealant designed to provide excellent adhesion to a variety of substrates, including glass, ceramics, painted surfaces and most metals. Offering superior weather resistance, it can be used for both indoor and outdoor applications. This sealant is resistant to UV rays, moisture, mould and mildew. Its clear formulation allows for seamless blending with surfaces.