650°F Red RTV Silicone Gasket Maker is developed for the hot running car's engine. Hi-Temp Red 100% RTV Silicone withstands temperatures form -100°F to +650°F (-73°C to +343°C) intermittent. Makes any sized or shaped gasket immediately. Ideal for timing covers, valve covers, oil pans, intake manifolds, exhaust manifolds and water pumps