Will the sealing performance of the safety skylight decrease after long-term use or in harsh environments?

Among the many parts of a car, the safety skylight brings bright space and comfortable ventilation to the car. The stability of its sealing performance under long-term use and harsh environments has become a key issue that worries car owners and is worth exploring in depth.

In the new car state, the sealing system of the safety skylight is like a precision fortress. High-quality sealing strips are often made of materials with excellent weather resistance such as EPDM rubber. They are flexible and fit tightly. With the tight design of the joint between the sunroof frame and the car body, it is difficult to break through this barrier, whether it is drizzle or rolling dust. In normal urban road commuting, with mild sunshine and moderate humidity, the sealing performance is as stable as Mount Tai in the short term, and the quietness of the car is not disturbed, and dryness and comfort are guaranteed.

However, time is a "strict examiner". The sunroof is opened and closed frequently, and the strips are repeatedly bent and stretched, just like a rubber band that loses its elasticity due to excessive use. Fine cracks quietly emerge, and the sealing "closed loop" begins to loosen. After several years, rainwater seizes the opportunity to enter the car. On rainy days, water stains may appear on the roof of the car, and even drip into the car, disturbing the driving environment.

The harsh environment is even more of a "tough enemy". Under the scorching sun, high temperature accelerates the aging of the rubber strip, hardens and shrinks, and the gap in the seal expands; in the cold wind and blizzard, the low temperature makes the rubber brittle, and ice and snow accumulate on the edge of the skylight. The thawing and freezing cycle is like a "physical attack", destroying the structure of the rubber strip. The acid and alkali erosion of high salt fog at the seaside and heavy industrial pollution areas corrodes the rubber strip and metal frame, eroding the foundation of the seal.

Fortunately, car companies and scientific researchers have not stopped responding. The new rubber strip incorporates nano-anti-aging and self-repairing materials to delay aging and automatically heal minor damage; optimize the drainage design of the skylight, even if there is a small amount of leakage, it can be drained in time to reduce water damage. Car owners regularly clean and maintain the skylight, apply special protective agents, and check the drainage grooves, which can also help the sealing performance to be more tenacious under the "encirclement and suppression" of time and harsh conditions, and escort comfortable driving for a long time.