A regular engine exhaust gas can easily reach 500˚C and so does the exhaust system. These temperatures can cause severe harm to the direct environment, people and equipment. Therefore, for almost any exhaust system, ducting, or silencer an external thermical insulation is required. TIO BV can calculate and supply several types of external insulations, for several temperatures and with different claddings up to the highest grades of polished stainless steel. A great secundary effect of these external insulations is the lower silencer body noise radiation figures.