High temp duct hose is a high temp resistant flexible air duct. The flexible duct hose has a glass fiber cloth silicone rubber coat. Silicone coated glass fiber cloth is the base material. It evenly coat or with silicone rubber. Silicone cloth has very good air tightness. Thus it can block the erosion of water, steam and other chemical solvents. At the same time, the excellent tear strength can prevent the surface from sharp things and cutting.
The reinforce of such duct hose is the steel ring on the surface. While the pressure that the air duct can withstand is mainly based on the thickness and density of the steel ring. The thicker the steel ring, the greater the pressure capacity and the distance. While the smaller the width withstand voltage, the wider the spacing, the smaller the withstand voltage. Because the flexible duct can withstand 400℃, it is very popular on the market. However, the quality are quite different. Because some suppliers sales low quality hose as the normal one. For example, they increase the space between steel rings to save cost.
Therefore, low priced high temp air duct breaks after a few hours of use. Then the steel rings of the air duct also fell off. But most people don’t know the reason. They think it is a product quality problem of the merchant. However, it is a common problem for high temp air duct hose.
Then what cause the high temp duct hose burst?
In fact, this is a pressure problem. The distance between the steel rings is too large. So that the pressure resistance of air duct is not enough. Then there will be cracks on the air duct. To solve this problem, you should know the work pressure first. Then choose the right type of duct hose based on it.
Everflex in an expert in high temperature ducting hose. If you have any questions, please just contact us.