Automotive sealing strips are crucial seals on the vehicle body. They are primarily made of materials such as PVC, EPDM, TPE/TPV, and are manufactured through extrusion or injection molding. They are primarily used on door frames, windows, hoods, and trunk lids, providing sealing, sound insulation, windproofing, dustproofing, and waterproofing.
Car door sealing strips primarily refer to door and frame sealing strips. These sealing strips must not only ensure a tight seal but also withstand the impact of closing the door. Therefore, they must be both elastic and resilient. Currently, they are primarily composed of EPDM composite rubber strips. Dense rubber extrusion part contains a metal skeleton to strengthen the strip’s shape and hold it in place. Sponge rubber bulb are soft and elastic, deforming under pressure and rebounding upon pressure relief. This sealant is applied or embedded into the vehicle door, working in conjunction with the body sealing strips to enhance the seal between the door and the vehicle body.
The hood seal is made of pure EPDM foam or EPDM composite rubber, and is used to seal the hood against the front of the vehicle. The tailgate seal is made of a composite rubber strip with a skeleton, capable of withstanding certain impact forces and ensuring a tight seal when the hood is closed.
Hood seals, front engine compartment seals, door seals, door frame seals, and trunk seals.
Automotive glass seals consist of the window glass run channel and inner and outer window seals. The window glass run channel seal is made of dense rubber of varying hardness and is embedded into the vehicle body to ensure precise dimensional fit, providing both sealing and sound insulation. Some run channel lips are coated or flocked to reduce friction noise between the glass and the run channel as the glass moves up and down. The inner and outer seals are made of EPDM rubber or a thermoplastic elastomer composite with a flocked or coated surface, which not only reduces friction with the glass but also provides a decorative effect.
Automotive seals are critical to the vehicle’s sealing and can impact the vehicle’s sound insulation. After a car has been used for a long time, the sealing of the car doors will decrease due to the natural attenuation characteristics of rubber, which may cause rainwater to enter the car, slow air conditioning cooling, dust to enter the door hinges and door locks, and air leakage from the car doors, causing increased wind noise, bringing various inconveniences and impacts to driving and riding.