Brand Name: Rutland | Color: BLACK | Container Size: 2.7 oz. | Packaging Type: Tube When you need an all-purpose, powerful sealant, Rutland 500 degree F RTV high heat silicone sealant is the right choice for any project. Seal fireplace inserts, install ceramic tiles or apply heat shielding to your stove - no job is too big. Permanent, flexible silicone adheres to glass, metal, plastics, fiberglass, wood, brick and stone. | Rutland 500Â °F RTV High Heat Silicone Sealant forms a tough rubbery seal. | It remains flexible in temperatures up to 450Â °F continuous and 500Â °F intermittently. | Tack-free in minutes and fully cures in approximately 24 hours, no heat required. | Meets ASTM C920-86 | Ideal for anywhere a permanent elastic seal is needed both indoors or outdoors | Adheres to most materials