Introduction to the Characteristics of Car Seals

2026-03-08 19:47:01

Car sealing strips serve to fill various gaps between car body components and provide functions such as shock absorption, waterproofing, dustproofing, sound insulation, and decoration. They enhance driving comfort and protect the car body.

Generally, if a car owner notices strong noise when driving under certain conditions, such as at high speeds, on sandy roads, or in busy urban areas, it is highly likely that there is a problem with the car's sealing performance. There are many solutions to this problem, and sealing strips are one of the cost-effective options. Car sealing strips are usually installed at the factory, and low-quality strips may age prematurely, causing a decline in sealing performance and making them ineffective after some time. Car sealing strips are very useful for addressing noise issues.

As is well known, the role of car sealing strips is not only to prevent external objects from entering the car, but also to effectively prevent rainwater from splashing inside, allowing owners to drive normally. In addition, sealing strips can reduce wind noise coming from the outside while driving, and also provide shock absorption and dustproofing functions.

What are the characteristics of car sealing strips? Let's have a brief look.

In a low-temperature test at -40°C, the sealing tape did not harden or become brittle, maintaining its softness and good adhesion, showing excellent cold resistance. At high temperatures of 120°C, the sealing strip still has good weather resistance, retains its elasticity, and its shape and function are not affected.

The choice of sealing material determines its softness and elasticity. By adjusting the formula, the softness of the dried sealing glue can be improved, forming a good sealing layer between the metal sheet and the strip. The unique high elasticity of butyl rubber ensures that the sealing glue can be easily peeled off from metal sheets without contaminating them.

Car sealing strips are mainly made of EPDM rubber, which is highly elastic, resistant to compression set, aging, ozone, and chemical effects, and has a wide operating temperature range (-40°C to 120°C). They are foamed and densely compounded, with unique metal clips and tongue-shaped buckles, making them durable and easy to install.

What should be noted when replacing car sealing strips? Let's briefly go over this.

1. Before replacing the sealing strip, you need to select a suitable style based on your car model. Generally, different sealing strips are equipped for different models.

2. After selecting the sealing strip, remove the old one, clean around the area, apply a protector, and then install the new strip.

3. During the replacement of the sealing strip, one or two drainage holes will remain on the door. Note: Do not block these drainage holes to avoid water accumulation inside the car.