PERMATEX ULTRA BLUE RTV SILICONE GASKET MAKER. Fills gaps up to 0.25 inch when fully cured. Sensor safe, low odor, non-corrosive. Oil resistant and allows joint movement. Eight times more flexible than cork composite gaskets and three times more flexible than conventional silicones. Temperature range: minus 75 F to 500 F. 3 oz. carded tube.