<p>Heat curing, thick fibrous injectable compound. Good travel. Below 550ºF (288ºC), speed up the cure by adding 103-P Accelerator (always use accelerator when sealing boiler feed water). Shelf life is 6 months in closed container. Refrigerated storage recommended. </p><h2>Applications</h2><p>Flanges, enclosures. For use on boiler feed water, condensate, high pressure steam, killing or plugging lines and valves (not for use as a valve packing)</p>