How the car seal works
The working principle of automotive sealing strip mainly realizes the functions of sealing, waterproof, dustproof and sound insulation through its material characteristics and structural design.
The main materials of automotive seals include polyvinyl chloride (PVC), ethylene-propylene rubber (EPDM) and synthetic rubber modified polypropylene (PP-EPDM, etc.), which are made by extrusion molding or injection molding. The sealing strip is applied to the door frame, window, engine cover and trunk cover to seal, soundproof, windproof, dustproof and waterproof .
Specific working principle
elasticity and softness : The seal can be tightly fitted to the gap between the door and the body through the elasticity and softness of its rubber material, ensuring that there is no gap. Even if the body is impacted or deformed, the seal retains its elasticity and maintains a tight seal .
compression action : When the seal is installed, it is usually fixed to the door or body through an internal metal chip or other support material. This structure closely fits the sealing strip between the door and the body through a certain pressure, increasing the sealing effect .
pressure, tension and wear resistance : rubber sealing strip has high pressure, tension and wear resistance, can withstand the frequent use of the door switch and various environmental conditions, to maintain a long-term sealing effect .
waterproof and dust-proof : rubber material has a certain waterproof and dust-proof performance, can effectively block rain, water fog and dust into the car, keep the car environment clean and dry .
sound absorption and vibration absorption : rubber has good sound absorption and shock absorption performance, can reduce the transmission of noise outside the car and the generation of noise inside the car, improve the ride comfort .
The specific role of different parts of the seal
door seal strip : mainly composed of dense rubber matrix and sponge foam tube, dense rubber contains a metal skeleton, play a strengthening and fixing role; The foam tube is soft and elastic. It can bounce back quickly after compression and deformation to ensure the sealing effect .
engine cover sealing strip : composed of pure foam foam tube or foam foam tube and dense rubber composite, used for sealing the engine cover and the front of the body .
back door sealing strip : composed of dense rubber matrix with skeleton and sponge foam tube, it can withstand certain impact force and ensure the sealing when the back cover is closed.
window glass guide groove seal : composed of different hardness of dense rubber, embedded into the body to ensure the accuracy of size coordination, to achieve sealing, sound insulation .
Through these design and material characteristics, automotive seals effectively improve the vehicle's sealing performance and driving comfort.
If you want to know more, keep reading the other articles on this site!
Please call us if you need such products.
Zhuo Meng Shanghai Auto Co., Ltd. is committed to selling MG&750 auto parts welcome to buy.
