
Replacement time depends on factors such as the presence of major cracks or breaks. Below is relevant information: 1. Door Seals: These are products that seal car doors, making them harder to open, and serve functions such as shock absorption, waterproofing, sound insulation, heat insulation, dust prevention, and fixation. They are primarily used on door panels, door frames, side windows, front and rear windshields, engine hoods, and trunk lids, providing waterproofing, dust prevention, sound insulation, temperature insulation, shock absorption, and decoration. 2. Car Doors: Car doors provide access for drivers and passengers while isolating external disturbances. They also offer some protection against side impacts and enhance the vehicle's aesthetic appeal. The quality of car doors is mainly reflected in their crash resistance, sealing performance, ease of opening and closing, and other functional indicators. Crash resistance is particularly important because during a side collision, the buffer distance is very short, making it easy for passengers inside the vehicle to be injured.

The door seals generally need to be replaced every 5 to 10 years, depending on how often they're used and where you live. Take my own experience, for example—when I drove my old car, I neglected them for seven or eight years, and the seals hardened and cracked. As a result, rainwater leaked through the door edges, leaving droplets all over the car and soaking the carpets. Later, when I took it to a repair shop, the mechanic explained that prolonged exposure to sunlight or cold weather accelerates aging, especially if the car is parked outdoors. Now I’ve learned my lesson—I check the seals every time I wash the car, looking for cracks, hardening, or deformation. If they feel dry or the door doesn’t close tightly, I replace them immediately. Actually, it’s pretty simple to do it yourself—just buy new seals and install them following online tutorials, costing only a few hundred bucks. The key is timely maintenance, because failed seals can lead to increased noise and poor AC efficiency, which is a hassle. In short, don’t wait too long—pay attention to weather conditions and usage habits to extend your car’s overall lifespan.

The replacement frequency of door seals varies from person to person, but it is generally recommended to inspect them every 5 years to ensure they are in good condition. In my daily car usage, I make it a habit to check the seal condition myself: gently press on it, and if it feels too hard or shows signs of tearing, it's a signal that it needs replacement. For example, seals on cars parked in garages tend to last longer than those exposed outdoors, as wind and sun exposure can accelerate aging. I also pay attention to how the door feels when closing—if the seal isn't tight, you might notice wind noise or moisture seeping in. Replacing them is actually quite simple: just buy a matching seal, remove the old one, and install the new one—low cost and quick. It's best to act early; otherwise, leaks or noise issues can become a real nuisance. Additionally, keeping the car clean helps prolong the seal's life, so regular washing to avoid debris buildup is recommended. From a safety perspective, worn seals can affect winter warmth or air conditioning efficiency, so don't overlook these small details. Overall, assess based on usage scenarios, and prioritize prevention to save hassle.

I don't think there's a fixed time for replacing door seals, it mainly depends on their condition. As a money-saver, I try to extend their lifespan by wiping the seals during regular car washes to prevent dirt buildup and parking in shaded areas to reduce sun exposure. Normally, they can last 5 to 10 years without issues, but once cracks, hardening, or leaks appear, replace them immediately. Buying a new seal yourself costs just a few dozen bucks, and learning to install it from videos is quick and easy—much cheaper than going to a 4S shop. Remember, common causes of seal aging include high humidity or frequent door use. Living in the rainy southern region, I pay extra attention. Overall, regular checks can save unnecessary expenses without compromising driving comfort.


