What is the application industry of silicone duct hose?

The silicone duct hose could working for high temperature up to +310℃, so the product could be used as component of machines which produces hot air, in rubber and plastic industry, the silicone duct hose is widely used. It could be also used as auto engine, truck engine, and airplane engine. For oven, the silicone duct hose is also used to exhaust hot air and smoke.