Cool It makes their Hi-Heat Coating to seal and protect your exhaust wrap project. Moisture is the enemy to your exhaust wrap and any material you have wrapped in it. Hi-Heat Coating contains extra resins and binders to not only seal the surface from moisture but also tuffens the surface of your exhaust wrap from abrasion. Hi-Heat Coating can handle direct heat to 2000 degrees Fahrenheit when used on ThermoTec exhaust insulation products. The coating also works excellent as a paint directly on metal surfaces that need extra heat protection. Made in the U.S.A.!