What is the use of automobile sealing strip?

Automobile sealing strip is one of the important parts of automobile, which is widely used in doors, windows, car bodies, skylights, engine boxes and backup (luggage) boxes. It has the functions of sound insulation, dust prevention, water seepage prevention, shock absorption, etc., and maintains the small environment in the car, thus playing an important role in protecting the occupants, electromechanical equipment and accessories in the car.

Specific classification by name

Automobile sealing strip hood can be divided into front, side and rear; Door seal team; Screen windows of front and rear windshields; Side window seal; Skylight seal; First-class door seals; Window guide groove glass chute; Waist circumference (containing water); Main seal team; Anti-noise sealing strip; Dust strips, etc.

Classification according to sealing characteristics

It can be divided into sealing strip and general seal. Among them, the weather sealing strip has a hollow sponge tube, which has a good function of maintaining temperature and humidity. Common weather-resistant sealing strips include door frame sealing strip, trunk sealing strip and engine box cover sealing strip. Commonly used general sealing strips include front and rear windshield sealing strips, corner window sealing strips, internal and external sealing strips, etc.

Classification of compound structure of rubber compounds

The sealing strip can be divided into pure rubber and composed of single rubber; The second composite sealing strip is composed of dense glue and foamed sponge glue, and the interior of the dense glue often contains axial metal skeleton materials; The ternary composite sealing strip consists of two kinds of sealant (one of which is light-colored) and sponge sealant, and usually contains metal skeleton and reinforcing fiber inside the sealant. Four-compound sealing strip Shanghai Shenya Seal Co., Ltd. took the lead in developing and producing a compound sealing strip composed of four kinds of rubber materials in China. A thin rubber protective layer was coated on the surface of cotton rubber (foam tube), which further improved the service life of the seal.

Classification by material type

Can be divided into rubber sealing strips; Plastic sealing strip; Thermoplastic elastomer sealing strip.

Classification by surface treatment state

Some sealing strips can be divided into flocking sealing strips after additional treatment; Surface coated sealing strip; There is a sealing strip bonded with fabric.

Special function classification

Some sealing strips have electronic intelligence functions, such as anti-pinch sealing strips.

Use skills 1. Check the sealing strip for large cracks or breaks. If the sealing strip is broken, it can be repaired with adhesive. In particular, it is easy to repair large cracked strips by using special glue for sealing strips. Of course, if the sealing strip is seriously damaged or aged, it is best to replace it with a new one.

2. After cleaning the sealing strips of doors and windows with automobile cleaner, the owner had better coat a layer of protective agent with strong permeability, which can not only prevent the aging of the sealing strips, but also greatly improve the sealing performance of the sealing strips. In addition, the gaps between sealing strips are easily filled with dust, leading to corrosion. To do this, use a brush to remove dust.

3. When replacing the whole car body, a layer of sealant should be coated on the overlapping part of the weld. The thickness of sealant is about 1mm, and the sealant can not have defects such as false adhesion and bubbles. The entire floor and front wheel housing should be coated with 3-4 mm elastic coating and anti-corrosion coating. These measures can not only greatly enhance the tightness of the whole vehicle, slow down the corrosion speed of the body, but also greatly improve the ride comfort.

4. The sealing between the car door and the car body is a difficult point. The sealing requirements are strict, the parts to be sealed are relatively long, the cross-sectional shapes of the sealing parts are different, and the doors are frequently opened and closed. In luxury cars, 3-way and 4-way seals are often installed, and the structure of 4-way seals at front pillars and roof side members is installed. This multi-channel seal is generally arranged at the front door, which not only has the sealing function, but also has the function of sound insulation and noise reduction for automobiles.

5. After the window glass is damaged, the owner should check whether the sealing strip is damaged when switching to glass. Because the window cannot be restored after repair, at this time, in addition to ensuring that the window glass can be pulled up or lifted conveniently, we should also pay attention to the sealing around the window glass. If the gap between the glass and the glass notch is uneven, and the rubber strip is in poor contact with the glass and the glass groove, the owner can easily pull off the sealing strip by hand.

6. When replacing the roof, the owner should first coat a layer of conductive sealant on the joints around the roof, and then coat flanging glue on the running water tank and the welded joints, which will not only help the sealing of the car body, but also prevent the car body from early corrosion due to water accumulation at the flanging weld.

7. Skylights are the basic configuration of most family cars. When the skylight of the car is opened, the rubber sealing strip track is exposed to the air, which will inevitably accumulate dust and even touch small gravel. Long-term use may cause the skylight to wear and deform and block the drainage hole. Therefore, it is very important to clean the track regularly and apply lubricating oil on it.

Tips:

Although the automobile sealing strip is a small part in the automobile body, it can ensure the stability and thickness of the door, and also make the automobile weather-proof, dustproof, heat-insulating and sound-insulating, and play a decorative role at the edges of doors and windows. When the car body is subjected to vibration and deformation, the sealing strip also plays the role of buffering, damping and protecting the glass. Therefore, car maintenance is no small matter, and no link can be ignored.