What are the factors that affect the sealing effect of the Automotive Wiring Harness Protection Sleeve?

It is well known that the sealing effect of the Automotive Wiring Harness Protection Sleeve is very good, but generally affected by the external environment and its own conditions, the sealing performance of the product will also change. According to the investigation, the main external factors that affect the sealing effect of the Automotive Wiring Harness Protection Sleeve are: the choice of sealing structure and the formation of oil film, pressure, temperature, compatibility of materials, and the material, hardness, and geometry and surface finish.

1. Oil resistance. Its performance is evaluated by comparing the test values before and after immersion of the product (such as material hardness change, tensile strength change rate, elongation change rate at break, volume change rate, compression permanent deformation, etc.).
2. Heat resistance and cold resistance: the Automotive Wiring Harness Protection Sleeve still has good elasticity at -70~350 degrees Celsius.
3. Anti-ultraviolet and ozone: Both of them have great oxidizing properties and can quickly decompose objects. However, it is almost not affected by the protective cover of the Automotive Wiring Harness Protection Sleeve. Because the Automotive Wiring Harness Protection Sleeve is very resistant to itself, most of the general sealing devices will choose the Automotive Wiring Harness Protection Sleeve instead of the Cable Sleeve.