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5 Best Headlight Sealant

When it comes to taking care of your vehicle, there are a lot of areas where you have to pay attention, apart from the engine and the overall power delivery system. You also need to take care of the accessories of your vehicle, which are similarly important and must always be in proper working condition in order to ensure a safe and enjoyable journey.

One such accessory that requires constant care is your car’s headlights. Headlights are always exposed to various environmental elements like rain, UV rays, dust, and debris. To offer a protective barrier on top of the lights to avoid damage, Headlight sealants are used. These sealants act as a protective barrier, preventing moisture, dirt, and other contaminants from entering the headlight housing. This protection is vital because moisture can lead to fogging, condensation, and even electrical issues within the headlight. Here are some important characteristics of a headlight sealant that you should know before you buy one.

  • Length: The length of the headlight sealant typically indicates how much material is included in the package. It’s essential to have enough sealant to cover both headlights adequately. Inadequate coverage can result in uneven application, leaving parts of the headlight lenses unprotected. This can lead to moisture, dirt, and UV rays penetrating the uncovered areas, undermining the sealant’s effectiveness in preserving the headlights.
  • Thickness: The thickness of the sealant layer plays a crucial role in how effectively it shields the headlights from environmental elements. Thicker sealant generally offers better protection by forming a more robust barrier against most elements that can damage the headlight. Thicker headlight sealant is also more durable and longer-lasting.
  • Material: Different vehicles use various materials for their headlight lenses, such as polycarbonate, glass, or acrylic. The material of the sealant should be compatible with the material of your headlight lenses. Using an incompatible sealant can lead to poor adhesion, reduced effectiveness, and potential damage to the lenses.

Most of the time, the headlights of vehicles have headlight sealant pre-applied, which does not need to be replaced for a long time. But if you are noticing problems with your headlights, such as dimmer illumination or dirt residue inside the lens, you may need to reapply the sealant right away. And to make it possible, we are bringing you a handful of the best choices available on the market right now for a headlight sealant. We have also prepared a “Buying Guide” for the best headlight sealant, where we will discuss some important parameters of this additive and tell you which properties you should check before you buy one.

Best Headlight Sealant Table

Headlight SealantLengthThicknessBuy Now
Morimoto Headlight Sealant13 FeetCheck On Amazon
ZXMOTO Headlight Sealant 13 Feet9 mmCheck On Amazon
XFasten Headlight Sealant20 Feet7 mmCheck On Amazon
MouJeHom Headlight Sealant13 Feet9 mmCheck On Amazon
2019 Headlight Sealant13 Feet7 – 10 mmCheck On Amazon

Best Headlight Sealant Reviews

1. Morimoto Headlight SealantMorimoto Headlight Sealant

Thousands of mechanists and car enthusiasts will suggest you go with Morimoto if you are looking for additives or sealant solutions for your car. This brand supplies almost all types of automotive sealants.

In the 1st place, we are introducing a revolutionary sealant for those who demand nothing but the best when it comes to sealing high-end headlights. With the Morimoto RetroRubber, you get the trust of an OEM-style sealant designed specifically for headlights that deliver unparalleled protection and peace of mind. This headlight sealant is tailored for resealing headlights, ensuring a precise and hassle-free application process. And unlike butyl blocks or butyl ropes, you won’t require any professional tool at the time of application.

This sealant is engineered with consistency in mind, offering a harder texture at room temperature that exhibits the same durability as OEM Butyl Rubber glue when properly applied and cooled. You will find both black and gray options with this unit. So, whether your housing was originally sealed with black or gray glue, you will have the flexibility to match your headlights perfectly. Each roll of sealant comes with approximately 4 meters of glue, making it more than sufficient to re-seal two or more large headlights.

Best Features

  • This is an OEM-grade sealant
  • Suitable for headlights as well as tail lights
  • Multiple color options are available
  • 13 feet of sealant is included in each package


  • The most popular and trusted choice on this list
  • It offers higher consistency at room temperature
  • Application is very easy


  • Quite an expensive choice considering it may require additives

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2. ZXMOTO Headlight Sealant ZXMOTO Headlight Sealant 

Another popular brand option for a headlight sealant is ZXMOTO. Apart from cars, it also supplies sealants needed for premium motorcycles such as Suzuki, Kawasaki, Yamaha, etc.

In the 2nd position, we are putting the ZXMOTO Retrofit Refit Butyl Rope Rubber Glue since it is also one of the popular as well as budget-friendly choices on our list. With a commitment to quality and functionality, this product is designed to enhance your driving experience by effectively keeping out wind, preventing water leakage, and reducing external noise, ensuring a comfortable and quiet ride. The ZXMOTO Headlight Sealant serves many different purposes. Apart from headlights, it can also be used for sealing the side of car doors, and columns A/B, and safeguarding your vehicle’s interior from the intrusion of wind and water.

Designed with longevity in mind, this sealant offers a permanent sealing and waterproofing solution. Once applied, you can trust that it will maintain its sealing effectiveness over time, providing consistent protection against moisture and environmental elements. This sealant is made up of synthetic butyl rubber, which offers exceptional waterproofing properties. Its robust composition ensures durability and reliability in diverse weather conditions, contributing to the long-lasting performance of your automotive seals.

Best Features

  • Can be used for many different applications
  • It creates a permanent sealing
  • Made up of high-quality synthetic butyl rubber
  • 13 feet of sealant is included in each package


  • Water and wind protection is pretty good
  • It offers permanent and reliable protection
  • Versatile range of applications


  • Material thickness could have been better

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3. XFasten Headlight SealantXFasten Headlight Sealant

XFasten is yet another brand that specializes in sealants and similar accessories used for car maintenance. Apart from sealants, you can also find tapes and adhesive rollers from this brand.

Our 3rd choice for the best headlight sealant is yet another premium alternative which is the XFasten Butyl Headlamp Sealant. This is also an OEM-grade and race-spec butyl tape designed to deliver professional results. This makes it an excellent choice for sealing headlights, windshields, windows, and even pool lights. Unlike most other choices, it is rated to last for years, even when exposed to high humidity, elevated temperatures, heavy rainfall, and UV radiation. This durability ensures that your seals remain effective over time, providing long-lasting protection.

XFasten’s exclusive butyl blend prevents the tape from degrading into a messy residue, allowing it to stick precisely where you want it. This feature enables both experienced mechanics and average automobile owners to achieve a professional and OEM-like finish. While heat tempering with an oven is recommended for optimal results, this butyl rope sealant tape can be heat-tempered using a hairdryer and clamps if an oven or heat gun is not available. Its flexibility allows it to be easily molded around tight corners and awkward curves, ensuring a gap-free and hassle-free installation process.

Best Features

  • It offers OEM-grade durability
  • A professional finish is provided
  • Installation is very easy and does not require heating oven
  • 20 feet of sealant is included in each package


  • Longer sealant material than other alternatives
  • Exclusive butyl blend to offer a premium finish
  • Sound dampening and shock absorption


  • Other options are considerably cheaper and thicker in comparison

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4. MouJeHom Headlight SealantMouJeHom Headlight Sealant

If you are looking for a basic and cheaper alternative, then check out this option from MouJeHom. It is one of the cheapest solutions available right now for a headlight sealant.

The MouJeHom 13Ft Butyl Sealant Tape is yet another versatile and reliable solution for achieving waterproof seals and soundproofing in various applications. This butyl rubber glue reseal tape is designed to provide superior performance and ease of use for a range of automotive as well as household sealing needs. With a length of approximately 13 feet, this Butyl tape offers an ample supply of sealing material. It provides enough rubber resealing for two to three headlight assemblies, making it a cost-effective choice for multiple projects or future maintenance requirements.

The tape also has an approximate thickness of 9 millimeters allowing it to seal gaps effectively between various automotive components such as car doors, car bodies, car hoods, and bed rails. It not only prevents moisture intrusion but also reduces noise and wind when driving at high speeds. This waterproof feature ensures that your seals remain intact even in adverse weather conditions. The tape is designed with controlled compressibility, allowing for easy installation. Thus. it won’t squeeze out of place and will maintain its sealing performance over time.

Best Features

  • Suitable for household applications as well
  • Waterproofing results are good
  • Designed with controlled compressibility
  • 13 feet of sealant is included in each package


  • Suitable choice for different types of application
  • It also serves as a sound-deadening solution
  • Perfect for taillight and headlight sealant


  • Not as reliable as a few other solutions

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5. 2019 Headlight Sealant2019 Headlight Sealant

For the last position, we have reserved yet another budget option that can be perfect for your needs. The following sealant tape also offers an assuring performance and durable material quality.

In the end, we will talk about yet another budget option which is the Butyl Sealant Tape. Though it may not be coming from a reputed brand like the options we have seen so far, it still offers pretty good qualities considering it’s a cheaper option. This sealant tape is purpose-built for sealing car doors, windshields, hoods, lights, body plate joints, and other similar applications. This tape is not only chemically resistant but also exceptionally flexible. It can be flattened or stretched as needed, ensuring easy and customizable installation.

To maximize its effectiveness, it’s recommended to clean and dry the installation area in advance before use, ensuring optimal adhesion. The tape is made up of non-drying, non-hardening synthetic butyl rubber sealant. Butyl rubber is known for its high viscosity, elasticity, and tightness, making it a reliable choice for sealing applications. Thus, it ensures excellent resistance to deformation, vibration, aging, and chemical corrosion.

Best Features

  • Serves versatile sealing requirements
  • Thickness is between 7 to 10 mm
  • Made up of high-quality butyl rubber
  • 13 feet of sealant is included in each package


  • Very easy to use
  • Highly flexible and adaptable to different installation needs
  • Can be used for household items as well


  • Sealing performance is better ensured with other options

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Buying Guide For The Best Headlight Sealant

Headlight sealant is a specialized automotive product designed to protect and preserve the clarity and functionality of a vehicle’s headlights. It typically comes in liquid form and is applied to the exterior surface of the headlight lenses. Once it cures, it forms a transparent, durable barrier that shields the headlights from environmental damage. Sealing the headlights with the right product can extend their lifespan. It prevents damage caused by exposure to harsh elements, ultimately saving you money on costly headlight replacements. But, you should make sure that you are picking up the right headlight sealant by referring to the information provided in our buying guide provided below.

1. Length

Checking the length of the headlight sealant before buying it is a vital step to ensure that you have an adequate amount of product to complete the job effectively. It basically tells you how much sealant material is included in the package and whether it is the right amount for your job or not. Apart from that, when working on a project like sealing headlights, interruptions can be frustrating and may compromise the quality of the job. If you run out of sealant in the middle of the application process due to insufficient length, it can be inconvenient, and may need an extra trip to the store to get more. Checking the length beforehand allows you to ensure that you have enough product to complete the task without interruptions. Purchasing headlight sealant in the appropriate length can also be more cost-effective in the long run. Buying a larger quantity may provide a better value per unit length compared to repeatedly purchasing smaller quantities.

2. Diameter/Thickness

The thickness or diameter of the sealant bead determines how effectively it can cover the entire headlight lens surface. A thicker or wider sealant provides broader coverage, ensuring that the entire headlight lens is protected from environmental factors. Adequate coverage is essential for the sealant to fulfill its primary role of preserving the clarity and functionality of the headlights. The thickness or diameter of the sealant can also impact its overall performance. Thicker sealants are generally more robust and durable, providing better protection over an extended period. Thicker sealant layers are also less prone to wear and tear, ensuring that the sealant maintains its effectiveness in safeguarding the headlights. Thicker options also prevent yellowing and oxidation of headlight lenses that can reduce the clarity and brightness of the headlights over time.

3. Material

Different vehicles use different materials for their headlight lenses such as polycarbonate, glass, acrylic, etc. The material of the sealant should be compatible with the material of your headlight lenses. If you end up applying an incompatible sealant, it may result in poor adhesion, reduced effectiveness, and potential damage to the lenses. Therefore, ensuring compatibility beforehand prevents costly repairs or replacements down the road. The material of the sealant significantly impacts its adhesion and bonding strength. Sealants formulated for specific headlight lens materials often have adhesion properties optimized for those materials. Using the wrong material can lead to the sealant not adhering properly, which could result in reduced protection and potential peeling or flaking.

4. Compatibility

Compatibility in this context ensures that the sealant will adhere properly, providing effective protection without causing any damage to your headlights. Apart from poor performance, incompatibility between the sealant and your headlight lenses can also potentially lead to damage. For instance, using a sealant that is too harsh or chemically incompatible with your lens material may cause discoloration, warping, or even cracks in the lenses. This can result in costly repairs or replacements, defeating the purpose of using sealant to protect your headlights.

Headlight Sealant – FAQs

1. How long does headlight sealant last?

Ans: The longevity of headlight sealant can vary depending on several factors, including the quality of the product, environmental conditions, and the quality of the application. Generally, headlight sealant is designed to last for a period of 1 to 2 years, although some high-quality sealants may provide protection for up to 3 years or more. Proper preparation, cleaning, and application techniques are essential for ensuring that the sealant adheres correctly and forms a uniform barrier.

2. Can you use a ceramic coating to seal headlights?

Ans: Yes, you can use a ceramic coating to seal headlights, and it is a popular choice among car enthusiasts for protecting and maintaining the clarity of headlight lenses. Ceramic coatings are a type of protective coating that is known for its durability, chemical resistance, and ability to provide a hydrophobic (water-repellent) surface. Ceramic coatings are also known for their long-lasting protection. They can provide durable shielding against environmental factors like moisture, dirt, road grime, and contaminants for an extended period, typically up to several years.

3. Can you use car wax to seal headlights?

Ans: Yes, you can use car wax to seal headlights, and it’s a common and cost-effective method to provide a protective barrier for your headlight lenses. Car wax is readily available, easy to apply, and can offer several benefits when used on headlights. Applying car wax to headlights can improve their clarity and optical quality. The wax can fill in minor surface imperfections and create a smoother, more transparent surface, enhancing visibility when driving at night or in adverse weather conditions.

4. What sealant should I use on headlights?

When choosing a sealant for headlights, it’s essential to consider your specific needs, the condition of your headlights, and your desired level of protection. Depending on your headlight’s condition, you can go with a complete headlight restoration kit, ceramic coating, clear coat, or a headlight sealant. If your headlights are severely faded, you should consider using a headlight restoration kit. These are complete kits that include sandpaper, polishing compounds, and a sealant or UV coating.


Properly sealed headlights maintain their original clarity, ensuring optimal light output. This not only improves your visibility when driving at night or in adverse weather conditions but also enhances the safety of both the vehicle as well as the driver. Therefore, headlight sealant is a valuable investment for preserving the performance and appearance of your vehicle’s headlights. However, choosing the perfect headlight sealant can be challenging due to compatibility, UV resistance, application method, durability, and other parameters. So in order to help you make an informed choice, you should check out our buying guide for the best headlight sealant and select a product that aligns with your specific needs. We have also picked out some top recommendations from our picks which might be helpful for you.

  • If you are looking for a budget option for a headlight sealant, then the MouJeHom Headlight Sealant Tape is the ideal option for you right now. Being the cheapest option on our list today, this headlight sealant offers long-lasting reliability along with affordability. You will receive about 13 feet long sealant material in the package which is more than enough to cover 2 to 3 headlights at once. Also, the thickness of the material is about 9 mm which is pretty much standard for headlight sealant and also what you get with many other premium alternatives. Since this is a rubber sealant, it is very strong and waterproof.
  • On the other hand, the Morimoto Headlight Sealant is the most trusted and reliable option that we have included on our picks today. Morimoto claims that this is one of the first iterations of a butyl headlight sealant which can be applied without any professional tools while keeping its integrity and sealing capabilities intact. At general room temperature, the material offers harder consistency which makes the installation much easier. You will be receiving 13 feet of sealant with this package as well, which is suitable for multiple applications.
  • Lastly, we will recommend the ZXMOTO Headlight Sealant , which is also one of the popular choices from our list as well as a budget choice. It also offers 9 mm material thickness, and 13 feet of sealant is available in each package. It is one of the few options on the market that is highly recommended for re-sealing the headlights after performing a retrofit. It can be used for headlights and windshields, making it more versatile in terms of application. Also, this sealant is made up of synthetic butyl rubber, which ensures the best results in all weather conditions.


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