Blue RTV Silicone Gasket Maker is a high temperature resistance silicone for heavy-duty applications. This fast curing silicone makes perfect gasket that resist cracking, shrinkage and migration cause by thermal cycling, remain flexible and stable form the temperature of -80°F to +500°F (-62°C to +260°C) intermittent. Ideal for engine repairing and replacement for paper, rubber and asbestos gasket, such as valve covers, oil pans, timing covers, water pumps, thermostat housing, transmission pans, etc.