The wiring harness sheath is widely used in the field of automobile, various mechanical and electronic equipment wiring harness protection.

In the existing passenger cars, the wire harness rubber sheath at the door is one of the necessary accessories in the design of the vehicle harness. It is used to seal the door harness at the sheet metal via hole and protect the wires to ensure the related electrical components. In the prior technology, there is a wiring harness rubber jacket with a different structure depending on whether there is a height difference between the side wall and the door sheet metal opening.

The common materials used in the production of wire harness sheaths are: NBR, SBR, NR, CR, EPDM, etc.And they can be vulcanized and pressed to produce; and compared with the above rubber materials, the comprehensive performance of EPDM is better.

EPDM mainly has the following advantages: 

1. The best ozone resistance, no cracks in the environment with high ozone concentration, which is much better than general rubber such as NR, SBR, CR. 

2. Good weather resistance, can be used for a long time in the natural environment of sunlight, humidity and cold without cracking. 

3. Good heat resistance, can be used for a long time in the environment of 120 ℃, the maximum operating temperature is 150 ℃.

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