Sikasil WS-295 Medium Gray Medium Modulus Neutral Cure Weatherseal Silicone Sealant 20oz Unipac•Versatile medium modulus•Unaffected by most atmospheric conditions•Excellent resistance to UV and Ozone exposure•Non-staining to most porous substrates•Joint movement ±50 %•Excellent adhesion to most substrates and surfaces•One-component, moisture-curing•Excellent gunnability in all temperatures.