Goobay 91657 is a waterproof, silicone-based sealant for both indoor and outdoor use. It is designed for sealing gaps, joints and overlaps between different materials such as metal, plastics, glass and masonry. This sealant is great for areas that are regularly exposed to water, such as windows, showers, gutters and areas around plumbing. It can also be used to fill cracks and crevices around air and water pipes and to bond rubber, wood and concrete. Goobay 91657 is resistant to UV radiation and can withstand temperatures up to 1000°C. This sealant is fast-drying and easy to apply, ensuring a perfect seal every time.