Don't leave for a long travel without a gasket maker. This can save your trip and time. Prematax USA High-Temp Red RTV Silicone Gasket Maker. Specially designed for use at high temperatures and for use under extreme conditions. By making a reliable "form-in-place" gasket that does not shrink or crack at high temperatures, this silicone gasket replaces almost any pre-cut gasket. Temperature range from -54?C to 343?C interrupted. Sensor safe. Protects pre-cut gaskets and extends the service life. Fills irregularities up to 6 mm after complete curing.