GS-Series N302R is a Neutral Cure GS-Series N302R (non-acid, based on polysiloxane), single component silicone sealant with High tensile strength, high modulus, it is sag resistant and rainwater accessories and will not corrode zinc or zinc/aluminum galvanized steel. It has excellent physical properties that are designed to provide outstanding durability and excellent UV resistant and weather resistant performance, multi-purpose and ready-to-use.