What is the sealant inside car doors called?

[McIsabel]

It is butyl rubber, characterized by softness and non-drying adhesion, primarily used for door waterproof membranes. The latest type of door waterproof membrane adhesive, the environmentally friendly water-based S1555 waterproof adhesive, offers better performance, cost-effectiveness, environmental friendliness, aesthetic appeal, and higher production efficiency. Its main functions are to work in conjunction with dustproof membranes to prevent dust, water, and noise. The composition is derived from petroleum by-products. Here is additional information: The role of sealant: Generally, the sealing here does not require a thick application of adhesive. It can be used in conjunction with solid gaskets or applied directly to the sealing surface for sealing purposes. In some cases, such as seam sealing or gap filling, a larger amount of adhesive may be required.

[StKylie]

I often tinker with my car myself. The sealant inside the door is commonly called the window seal strip, which is mainly made of rubber and attached to the inner side of the door to prevent water leakage. Once during a long-distance drive in heavy rain, I noticed water seeping into the car, and upon inspection, it turned out this seal strip had aged and cracked. During regular maintenance, it's advisable to periodically check for gaps that might let light through or feel unusual, especially in older cars where this seal tends to harden and peel off. If it's damaged, you'll need to replace it—it's a simple DIY job: clean the surface, align and stick it on. The material isn't expensive, but once installed properly, it ensures good sealing to prevent rust or short circuits in electronic components. If left unrepaired for a long time, rainwater leakage can soak the floor mats and even corrode the door structure, compromising safety. Mechanics often say this small part plays a big role, so don't overlook its routine maintenance.

[LeWeston]

As a car enthusiast, I'd like to discuss from a mechanical perspective. The door inner sealing adhesive, professionally called butyl rubber sealing strip, has good elasticity and strong adhesion, used to block gaps in window tracks for waterproofing and dustproofing. The material is usually weather-resistant rubber, which may shrink or crack over time. I once encountered excessive wind noise in my car, and it turned out to be due to inferior quality of this adhesive. When selecting adhesive, choose high-quality ones. Nowadays, new silicone materials are more durable and mold-resistant. Replacing it yourself isn't difficult, but improper installation may lead to secondary leaks. If left unrepaired, it can cause water accumulation inside the door, accelerating component aging. I recommend checking the edges for smoothness and security during car washes. Overall sealing is crucial for ride comfort.

[AndersonLynn]

Driving for long periods often leads to issues with the door sealing strip, commonly referred to as the door seal. If this strip is damaged, you may hear whistling wind noises while driving or notice water seeping into the car during rainy days. This happened to my car last time—the interior ceiling got soaked, and the mechanic said replacing the new sealing strip would fix it. Don’t slack on daily maintenance, especially in winter when the seal becomes brittle and prone to cracking. Leaks could damage the audio system or lock mechanisms. For self-inspection, check if the door closes tightly. The material cost for replacement is low, so timely action saves hassle.

[FinleyMarie]

When maintaining my vehicle, I pay special attention to the door sealing rubber, formally known as the window sealing strip. I regularly check for cracks or detachment to prevent water leakage into the car. Long-term neglect can lead to electrical short circuits or door panel rust. From a cost perspective, rubber sponge strips are cheaper but require replacement with model-specific parts. For daily inspection, it's recommended to check once a month by pressing with fingers to test softness. If aging occurs, replacing it is simple but time-consuming, taking about half an hour. Proper sealing improves sound insulation and air conditioning efficiency, ensuring driving safety.