What is the car luggage sealing strip?
The car luggage sealing strip is a rubber sealing strip installed on the edge of the trunk (cargo compartment) lid. Its main function is to fill the gap between the lid and the vehicle body, providing waterproof, dust-proof, soundproof and shock-absorbing effects. It prevents rain and dust from entering the trunk and also buffers the impact force when closing the trunk.
Its material is similar to that of the door sealing strip, and the mainstream is EPDM (triple rubber). It can adapt to temperature ranges from -40℃ to 120℃, has strong anti-aging ability, and is unlikely to crack even after being used for seven or eight years. Some models also use TPV (thermoplastic vulcanized rubber) and other thermoplastic elastomers, which are more wear-resistant and lighter.
Specific functions
Waterproof and dustproof: The sealing strip blocks the gap between the trunk lid and the vehicle body, preventing water from leaking in during rainy days or when washing the car.
Sound insulation and noise reduction: It reduces wind noise and tire noise from entering the vehicle when driving at high speeds.
Shock absorption and buffering: It buffers the impact force when closing the trunk, protecting the trunk lid and the lock.
Maintain the interior environment: It prevents dust and exhaust fumes from entering, protecting the items in the trunk.
It should be noted
Over time, the sealing strip may age, harden, or even crack, resulting in a decline in sealing performance. This may lead to air leakage, water leakage, and increased noise. At this point, a new sealing strip needs to be replaced. During daily maintenance, be sure not to use corrosive cleaning agents to clean the rubber strip. You can apply a layer of rubber protection agent regularly to delay aging.
The main function of the car luggage sealing strip is to prevent water and dust, reduce noise, absorb shock, and protect the vehicle body.
It is installed in the gap between the luggage compartment cover and the vehicle body, filling the joints to prevent rain, dust, and sand from entering the trunk. At the same time, it can also reduce wind noise and abnormal sounds during driving.
Specific functions:
Waterproof and dustproof: Prevent rain and dust from entering the trunk, keeping the interior dry and clean, which is the first line of defense for vehicle waterproofing and dustproofing.
Noise reduction and sound insulation: Fill the gaps, reduce wind noise and tire noise transmitted into the vehicle during high-speed driving, improving driving comfort.
Shock absorption and buffering: Serve as a buffer when the vehicle body is subjected to vibration and bumps, protecting the luggage compartment cover and vehicle structure, and also making the closing sound more stable and heavy.
Aesthetic decoration: Covers the joints at the edges of the doors and windows, providing a certain decorative effect.
Points to note
The sealing strips are made of rubber and will age, harden, crack or lose elasticity over time, resulting in a decreased sealing effect. If you notice water stains in the trunk, water marks on the door frame after washing the car, or sudden loud noises while driving, it is recommended to check the condition of the sealing strips and replace them promptly.
First, determine the type of fault before taking action: minor aging or local damage can be treated by cleaning, maintaining or repairing; if they have cracked, deformed, or lost elasticity, replacing them directly is the most convenient solution. Here is a set of troubleshooting plans for you, arranged from minor to severe.
Self-check: Determine the extent of the damage to the sealing strip
Look at the appearance: shine a flashlight around to see if there are cracks, curled edges, or breaks, and check if the edges are detached from the vehicle body.
Test the elasticity: press or gently stretch it with your hand. Normally, it should quickly rebound; if you press it and it feels like "dead skin" without rebounding, it indicates aging and failure.
Listen to the sound: when closing the trunk, the originally dull "puff" sound turns into a crisp "click", indicating that the sealing is not properly fitted.
Check for water stains: after rain or after washing the car, check the corners of the trunk, the tire well, if there is moisture, water stains or musty smell.
Deal with the situation according to the circumstances
Minor aging or just hardening: buy a bottle of rubber maintenance agent or silicone oil, apply it evenly and then dry it. It can restore some elasticity; vaseline can also be used, but it needs to be reapplied frequently.
Small cracks: use rubber-specific glue to repair, it can hold for a while.
Local loosening: clamp the steel spring below the rubber strip and reset it, then press it back into the groove.
Severe cracking, deformation, or not rebounding when pressed: don't repair it anymore, replace it directly. Ordinary rubber sealing strips can be bought online for tens to hundreds of yuan, and they can be matched with the vehicle model.
If the sealing strip looks fine but still leaks, focus on checking if the drainage holes at the bottom of the trunk are blocked by sand and debris. Use a wire to clear them; if it still leaks, it may be due to deformation or the drainage pipe of the sunroof being blocked， and you will need to go to the repair shop.
Regular maintenance can extend its service life for several more years.
Try to park in a shady area to avoid prolonged exposure to the sun， as ultraviolet rays are the number one killer of rubber.
Don't use a high-pressure water gun to rinse the sealing strip harshly when washing the car， and avoid using corrosive cleaning agents.
Regularly wipe the fine sand and dust on the rubber strip with a damp cloth， and apply a little rubber protection agent occasionally； in winter， apply antifreeze.
Don't press the trunk too hard when closing it； just gently pull it down.
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