The Right Stuff® seals instantly. Forms reliable, long-lasting elastomeric rubber gaskets. Sensor-safe. Powertrain fluid resistant (oil, coolant and ATF). Used on O.E.M. production lines. Outperforms pre-cut gaskets. This can makes 8-10 average four cylinder valve cover gaskets. Makes any size of shape gasket (valve covers, oil pans, pumps, etc.). Operates in environments to 450F (232C) continuous; 500F (260C) intermittent. No leaks in over 5 million miles of fleet testing.