Make leak-proof gaskets and return equipment to service immediately! Permatex premier instant gasket maker was designed as a replacement for conventional gaskets. This elastomeric “formed-in-place" material is more reliable and longer lasting than pre-cut gaskets. It is blowout resistant and protects against leaks and seepage caused by vibration and thermal expansion. Formulated to meet or exceed performance standards for long-term salability, durability and handling, this material is used on OEM production lines and specified in their service parts programs. Temperature range -75°F to 450°F (-59°C to 232°C) continuous, 500°F (260°C) intermittent; resists ATF, coolant, oil and other shop fluids. Sensor-safe. Fleet-tested.