Rubber Pipe in Automobile mainly connected to the engine and air filter, engine and radiator system, automotive air conditioning systems,like air conditioner hose. As a part of the intake system, it is close to the engine. Therefore, it needs high temperature, oil resistance, corrosion resistance, aging resistance and low temperature resistance. There are many kinds of materials according to the processing technology. For example, NBR nitrile rubber is widely used in Vacuum brake hose, good oil resistance with high plastic content, but relatively poor ozone resistance; EPDM EPDM rubber for automotive water pipe series. Such as radiator hose, air conditioning tube and so on. There are some high-performance materials such as AEM acrylic high temperature and so on. Each rubber has its own characteristics, so in the hose selection material is particularly important above. Basically, high-grade cars use the material is relatively good, some micro-car, van used materials are poor, such as some micro-car in the use of nitrile rubber as a fuel pipe, nitrile rubber are not suitable for fuel systems. Thus replacing the chloroprene rubber fluorine hose is more extensive.