1. waterproof performance under normal circumstances

Material impact:

Plastic rear tail box: Most plastic rear tail boxes have a certain degree of waterproofness. High-quality plastic materials are usually well sealed and can withstand a certain degree of rain. However, if the plastic material is thin or of poor quality, water seepage may occur during prolonged rain or large currents.

Metal rear box: metal material itself does not have good waterproof. However, some metal tailboxes may be coated on the surface or sealed to improve waterproof performance. If the coating is damaged or the seal is not tight, it is also easy to enter water.

Structural design:

Sealing strip: part of the rear tail box will be installed at the connection between the box cover and the box body. The sealing strip can effectively prevent rainwater from seeping into the box from the gap. The high-quality sealant strip is soft and elastic, and can fit closely to provide better waterproof effect.

Drain hole design: some tail box bottom will be designed with drain hole. The function of the drainage hole is to discharge the water in time when a small amount of rainwater enters the box to avoid water accumulation. However, if the drainage hole is blocked or the design is unreasonable, it may cause the rainwater to be unable to discharge, which will affect the waterproof performance.

2. waterproof performance in different environments

Light rain weather: in the case of light rain, most of the rear trunk can better keep the box dry. However, if you are exposed to rain for a long time, or if rainwater flows along the car body to the rear trunk, a small amount of rainwater may enter the trunk through gaps or vents.

Heavy rain or heavy rain weather: In heavy rain or heavy rain, the waterproof performance of the rear trunk is facing a greater test. If the sealing performance of the rear tail box is not good, or the installation is not firm and the gap is increased, it is easy to enter water. At this time, even if there are sealing strips and drainage holes, it may not be possible to completely prevent rainwater from entering.

When washing the car: During the car wash, the water flow from the high-pressure water gun may challenge the waterproof performance of the rear trunk. If the tailbox is not tightly sealed, water may seep into the box through the gap. Therefore, when washing the car, you should try to avoid direct high-pressure water gun to the tail box spray.

In order to improve the waterproof performance of the rear trunk, the following measures can be taken:

Select the rear trunk with good quality and good sealing performance. At the time of purchase, you can carefully check the material, structure and sealing tape of the product to ensure that it has better waterproof performance.

Regularly check whether the sealing strip of the tail box is in good condition, and replace it in time if it is damaged. At the same time, clean the drain hole to ensure that it is unobstructed.

When storing items, you can use plastic bags or waterproof bags to wrap the items to add a layer of waterproof protection.

If the rear tail box has been flooded, the accumulated water in the box should be cleaned up in time, and the items should be taken out to dry to avoid damage to the items.