10.3 oz. Black Silicone Sealant. It is flexible and waterproof, making it ideal for use on metal, glass, wood, and plastic. It resists temperatures up to 232 °C (450 °F) and adheres to clean metal, glass, and most types of wood, ceramic, plastic, brick, and slate. It dries to the touch in 30 minutes and cures fully in 24 hours.