This high-grade silicone sealant from Bond It is perfect for sealing external wood, aluminium and uPVC doors and windows. It is available in a range of colours including white, black, clear, brown, rosewood, grey and anthracite. The WP100 Silicone Sealant is a rapid cure mastic that comes in a 300ml tube. This product is made in the United Kingdom and is of low modulus, making it perfect for external use. It is recommended that this silicone sealant is not used on natural stone or porous surfaces. Please note that this product does not come with a custom bundle.