Best Silicone Adhesive For Plastic

What’s the best silicone adhesive for plastic? There are plenty of options, but this buying guide will help you find the best one for your purposes, whether temporary or permanent bonding or use on various surfaces or products. The wide variety of tips and advice in this article will help you make the right choice.

Read More: Silicone Adhesive vs. Silicone Caulk

Why Do You Need a Silicone Adhesive?

A silicone adhesive is necessary for anyone looking to create a strong bond between two surfaces. Whether you want to attach two pieces of plastic or seal a leaky pipe, a silicone adhesive will do the job. 

But with so many different types and brands of silicone adhesives on the market, it can be tough to know which is right for your needs. That’s why we’ve put together this comprehensive buying guide to help you make an informed decision.

After Applying The Best Silicone Adhesive For Plastic

5 Best Silicone Adhesives For Plastic

#1. Henkel 908570 2.7 oz Tub Clear Silicone Waterproof Sealant

Henkel 908570 2.7 oz Tub Clear Silicone Waterproof Sealant

Henkel 908570 Specs

Dimensions‎1.25 x 3.81 x 8 inches
Weight‎3.84 Ounces
Product Size2.7 oz
Cure Time24 Hours
Compatible MaterialPlastic, Leather, Vinyl, Wood, Aluminum, Atainless steel

Henkel 908570 Review

The Henkel 908570 2.7 oz Tub Clear Silicone Sealant is a high-quality sealant that can be applied to a variety of different materials, including leather, vinyl, canvas, and textiles.

The silicone formula will protect the material against water damage while providing an airtight seal to keep moisture out. This product comes in clear color, so it won’t show through your material’s original color.

It’s wonderful for closing up visible gaps, crevices, and holes; fixing breaker boxes and appliance boxes, and sealing or repairing doors and windows.

You can use the adhesive to protect your house and family from water damage if it’s used outdoors on boots and shoes.

It also bonds vinyl tile, some rubbers, and most plastics. This sealant can create a watertight seal on anything you need to bond within your home or business!

This product is waterproof, so you can use it in any room of your house without worrying about leaks. It’s also safe to use on glass and ceramic surfaces prone to scratches. 

Henkel 908570 Pros And Cons


  • It can be used on a variety of materials
  • Bonds well
  • Waterproof
  • Aquarium safe
  • Does not shrink or crack


  • It may not work well on all plastics.

#2. Permatex 81158 Black Silicone Adhesive Sealant

Permatex 81158 Black Silicone Adhesive Sealant

Permatex 81158 Specs

Dimensions‎8 x 4 x 2 inches
Weight3.2 Ounces
Product Size3 oz
Cure Time24 Hours
Compatible MaterialPlastic, Metal, Fabric, Glass.

Permatex 81158 Review

Permatex 81158 Black Silicone Adhesive Sealant is a tube of black silicone adhesive sealant. This sealant can be used to bond glass, metal, and plastic surfaces together.

The product can also be used on fabric and other materials not recommended for bonding with this sealant.

This is a black silicone adhesive sealant for sealing and waterproofing joints in rubber or plastic pipes subject to vibration.

The Permatex 81158 is excellent for sealing up any leak or crack in your home. It provides an effective barrier against water and moisture, which can help protect the joint from corrosion.

Permatex 81158 Pros And Cons


  • General purpose 
  • Waterproof 
  • Flexible 
  • Withstands weather and vibration 
  • Wide temperature range 


  • Needs clamping

#3. J-B Weld 31310 All-Purpose RTV Silicone Sealant

J-B Weld 31310 All-Purpose RTV Silicone Sealant

J-B Weld 31310 Specs

Dimensions‎1.97 x 1.57 x 6.3 inches
Weight3.17 Ounces
Product Size3 oz
Cure Time24 Hours
Compatible MaterialPlastic, Glass, Ceramic.

J-B Weld 31310 Review

J-B Weld 31310 Silicone Sealant is a high-quality, general-purpose sealant and adhesive. It can be used in household or mechanical assembly applications.

This product has high tensile strength, making it very durable for any project you might need to use it on. The All-Purpose RTV Silicone Sealant also has excellent resistance to water and other corrosive materials that could damage the bond between two surfaces.

It is a versatile and dependable product that can be used on many different surfaces. It has a long shelf life (up to five years) and will not shrink or crack when cured.

This sealant is great for household, automotive, ceramic, cloth, carpet, glass, rubber, and windshields. I love the versatility of this product; it’s perfect for everything from fixing leaky pipes to sealing up cracks in your shower walls.

J-B Weld 31310 Pros & Cons


  • Strong bond
  • Waterproof
  • Weather resistant
  • Does not shrink or crack


  • It may be difficult to remove once cured.

#4. Permatex 80050 Clear RTV Silicone Adhesive

Permatex 80050 Clear RTV Silicone Adhesive

Permatex Silicone Adhesive Specs

Dimensions‎4.48 x 3.12 x 0.02 inches
Weight3 Ounces
Product Size3 oz
Cure Time24 Hours
Compatible MaterialPlastic, Metal, Fabric, Glass.

Permatex Silicone Adhesive Review

Permatex 80050 Clear RTV Silicone Adhesive Sealant is the perfect silicone adhesive sealant for any project. This product can seal glass, plastic, metal, or fabric.

Not only is this sealant weatherproof, durable, and flexible, but it will also last for a long time with waterproof, weather-resistant, and elastic properties that make it perfect for outdoor use.

It’s also easy to apply with its simple squeeze tube applicator, which makes this product ideal for any project around the house.

Permatex Silicone Adhesive Pros & Cons


  • It can be used on a variety of surfaces
  • Durable and waterproof
  • Flexible


  • It may not work well on very porous surfaces.

#5. Rutland 500°RTV High Heat Silicone

Rutland 500°RTV High Heat Silicone

Rutland Silicone Adhesive Specs

Dimensions‎2.13 x 2.13 x 7.75 inches
Weight3.2 Ounces
Product Size2.7 oz
Cure Time24 Hours
Compatible MaterialPlastic, Glass, Ceramic.

Rutland Silicone Adhesive Review

This silicone can withstand high temperatures, so this is the silicone you want for microwaves, ovens, and other applications in which heat resistance is a must. Low viscosity allows this product to cure quickly, saving you money and time.

Rutland High-Temperature Silicone forms a tough and flexible seal that will withstand high heat for long periods. This product is perfect for use in automotive, aerospace, marine, or any other application where you need a strong sealant with the ability to resist extreme temperatures.

There are many potential uses for this product. For example, fireplace inserts can be sealed, solar panels can be repaired, and stove backs can be protected with it. It is perfect for people who enjoy DIY projects and are do-it-yourself minded.

Rutland Silicone Adhesive Pros & Cons


  • Can withstand high temperatures
  • Perfect for flexible and strong bond
  • Adheres to many different surfaces


  • It may not work well on very dirty or greasy surfaces.

Read More: Silicone Sealant vs. Adhesive

What to Consider Before Buying Silicone Adhesive?

When it comes to choosing the best silicone adhesive for plastic, there are a few things you’ll want to keep in mind. 

First, consider what type of plastic you’ll be working with. Some adhesives work better with certain types of plastic than others. 

Second, think about what kind of bonding you need. Some adhesives are better for temporary bonding, while others create a more permanent bond. 

Third, take into account the cure time. Some adhesives cure quickly, while others take longer. 

Fourth, consider the temperature range. Some adhesives can withstand higher temperatures than others. 

Fifth, think about the shear strength. This measures how well the adhesive can resist being pulled apart. 

Sixth, consider the tensile strength. You’ll want an adhesive that has both high shear and tensile strength. 

Lastly, ensure that your silicone adhesive will adhere to surfaces other than just plastic. The last thing you want is your project to fall apart because your adhesive wasn’t strong enough.

General Guidelines on Using Silicone Adhesives

When using silicone adhesives, always remember to read the instructions on the label. This will ensure that you are using the product correctly and safely. 

In general, you should apply the adhesive to one surface, then allow it to dry before bringing the two surfaces together. This will give the adhesive time to bond properly.

Make sure that both surfaces are clean before applying the adhesive. Any dirt or debris will weaken the bond. 

Silicone adhesives can be used on various materials but work best on smooth surfaces. 

If you need to remove silicone adhesive from a surface, use a solvent such as acetone or alcohol. 

Do not use an abrasive like sandpaper to try and remove the adhesive. The abrasive will scratch the surface and leave residue, which may interfere with future bonding.

Does silicone hold on plastic?

Yes, silicone can adhere to plastic. However, the strength and durability of the bond can depend on the type of plastic and the specific silicone product used.

Some types of plastic, such as polyethylene and polypropylene, can be difficult for any adhesive or sealant to stick to.

Always check the product specifications to ensure compatibility with the specific type of plastic you are working with.

It’s also a good practice to clean the plastic surface before applying the silicone to ensure a better bond.

What does silicone not stick to?

Silicone struggles to stick to certain plastics like polyethylene, polypropylene, and non-stick surfaces (such as Teflon), and it doesn’t adhere well to itself once cured.

Additionally, dirty, dusty, or wet surfaces can hinder their adhesion. Always check product specifications for material compatibility.

Last Opinion

Many different types of silicone adhesives can be used for plastic. It is essential to consider every kind of adhesive’s properties to choose the best one for your project. 

With so many options available, finding the perfect silicone adhesive for your needs is easy. These are just a few of the most popular ones and come in various variations. 

Some products are only compatible with certain plastics, while others work on anything. If you want to know more about any specific product, comment below!

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