adhesive sealant vs silicone


Adhesive Sealant vs Silicone: Which One Should You Choose?

When it comes to sealing surfaces, there are multiple options available, including adhesive sealants and silicone. Both do the job of sealing, but they have slight differences that can be crucial in choosing the right sealant for your project. In this article, we'll discuss the differences between adhesive sealants and silicone and help you pick the right one for your needs.

1. Adhesive Sealant

Adhesive sealants are a hybrid of adhesives and sealants, making them a commendable option for bonding and sealing applications. These sealants offer high bonds, which makes them perfect for use on surfaces that require strong seals such as ceramics, glass, and metals. The adhesive properties of these sealants make them great for high-stress environments and applications like automotive assembly and construction.

2. Silicone

Silicone sealant is a synthetic rubber that offers excellent water resistance, flexibility, durability, and heat resistance. It offers strong bonds and can be used on a wide range of materials, including plastic, metal, and glass. When cured, silicone forms a rubber-like seal that can handle extreme temperatures and is resistant to weathering, chemicals, and UV light.

Differences between Adhesive Sealant and Silicone

Adhesive sealant and silicone are both excellent options when it comes to sealing surfaces. However, there are some differences between the two that make one a better choice than the other depending on the application.

1. Cure Time

Adhesive sealants dry quickly and form a strong bond in only a few hours, while silicone can take up to 24 hours to cure fully. If time is of the essence, adhesive sealant is the better choice.

2. Application

Adhesive sealant requires a clean and dry surface for proper adhesion, while silicone can be applied to moist surfaces. Silicone can also be applied in cold temperatures, while adhesive sealant requires a warm environment to cure.

3. Flexibility

Silicone offers more flexibility than adhesive sealant. It can stretch up to 700% of its original size without breaking, which makes it ideal for sealing gaps or in areas that require flexibility.

4. Temperature

Silicone can withstand higher temperatures than adhesive sealant. It can handle temperatures up to 400°F, while adhesive sealant can only handle up to 300°F.

5. Chemical Resistance

Silicone offers better chemical resistance than adhesive sealant. It can withstand exposure to harsh chemicals and solvents without breaking down. Adhesive sealants, on the other hand, may weaken or break down when exposed to certain chemicals.


Choosing the right sealant for your project is vital to ensure that the seal is strong and durable. Adhesive sealant and silicone have unique properties that make them suitable for different applications. If you are looking for a sealant that can handle high-stress environments, then adhesive sealant is the better option. On the other hand, if you require a sealant that is highly flexible and can withstand extreme temperatures or chemicals, then silicone is the right choice.

When choosing between adhesive sealant vs silicone, it's important to consider the application and the properties that matter most. With this knowledge, you can select the best sealant that matches your unique needs.


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