Premium Weatherproofing Silicone Sealant - New Construction And Renovation Projects Features One-component, neutral-curing, RTV silicone sealant. Non-corrosive to bonded substrates, including sensitive metals and glass. Excellent weather resistance with high durability against UV, heat, humidity, ozone, and temperature extremes. Remains flexible from -50℃ to 180℃. Accommodates ±35% joint movement. Strong adhesion to common construction materials such as glass, aluminum,