8 Best Heat Resistant Glue | Reviews & Buyer’s Guide

While working on projects, finding the best glue is key to making them long-lasting. This is especially true when you want glue for an object facing high temperatures, such as exhaust pipes. 

Having said that, there are various types of heat-resistant adhesives available on the market. So, it can make choosing the best heat-resistant glue a bit confusing, especially if it's your first time buying one. 

Hence, we thought of coming up with this informative guide to suggest some excellent adhesives we tried out that can withstand extremely high temperatures. And, there's a buyer's guide to help you make a well-informed decision. 

So, without further ado, let's get started! 

Listed below are the Best Heat Resistant Glues:

• Gorilla Construction Adhesive: The Gorilla Heavy Duty Construction Adhesive excels in quick bonding and all-weather durability. Its strong, waterproof, and low-odor performance is partially offset by the effort required to squeeze out the glue from the tube.
• J-B Weld Metal Adhesive: The J-B Weld High-Temperature Resistant Metal Adhesive distinguishes itself with its extreme heat resistance and unique tub packaging. The small quantity of glue supplied may not suffice for larger projects.
• Rutland 500°RTV: The Rutland 500°RTV High Heat Silicone shines in environments demanding heat resistance up to 500°F. The single-use packaging of the adhesive could lead to wastage for smaller applications.
• Henkel Corporation Loctite Stik n' Seal: The Henkel Corporation Loctite Stik n' Seal Extreme Conditions Adhesive provides precision in the application and a strong bond on wet surfaces, characterized by its low odor once dried. It does come within a packaging setup that users might find challenging to open.
• Rutland 600-Degree RTV: The Rutland 600-Degree RTV Silicone Seal Cartridge meets the requirements of extreme heat conditions going up to 600°F and works well as a sealant. The adhesive is high in quantity but lacks waterproofing characteristics.

1. Gorilla Heavy Duty Construction Adhesive

There are very few people who aren't aware of the varied glue products manufactured by Gorilla. This one is the heavy-duty glue that helps bond various materials, including glass, metal and even plastic. It comes with all-weather resistance to maintain the bond under all conditions. So, let's have a look at it. 

Right off the bat, we were impressed by the quality of this glue. It's a 100% waterproof formula, so you would be able to use it to bond objects that may be regularly exposed to rain or water. On top of that, this is an all-weather glue, so the bond does last even when with high temperatures, and it's, in fact, heat-resistant. 

Furthermore, one of the best things about this glue is that it has a low odor. So, if you are looking for a glue that would be able to bond fabric or the rubber sole of your shoe, this would be a good choice. This feature also makes the glue useful for those who feel nauseous around pungent products. 

What's more, on application, this glue is able to hold materials together in just 30 seconds. And, within 24 hours, you would be able to use the glued surface or object without worrying about it separating. 

Even though this is one of the best heat-resistant glues available on the market, our only gripe is with the tube. It takes a bit of pressure to get the glue out while applying. This can be slightly problematic for anyone with arthritis or low mobility in their hands. 

2. J-B Weld ‎ExtremeHeat High-Temperature Resistant Metallic Paste

Are you looking for a useful metal adhesive that comes with high-temperature resistance? If so, try out this product from J-B Weld, as it has been designed to bond metal surfaces even in extreme temperatures. Moreover, it's from a reputed brand that has been present on the market for a long time. 

To begin, what we really liked about this adhesive was the packaging. Rather than a messy tube, this temperature-resistant glue is packaged in a small tub. So, you can easily use a spatula to scoop it up and apply it on metal surfaces without needing much time. 

Another great thing about this adhesive is its versatility. You can use it to bond various types of metals and even repair cracks or holes. On top of that, after the adhesive has dried completely, you can drill or sand it according to the requirements of a project. 

Furthermore, this high-temperature glue is devoid of solvents or VOCs, which are harmful to our bodies. And, as a non-flammable formula, it's safer to use compared to some other similar products. 

Overall, this is an excellent adhesive to use if you are looking for one that can withstand high temperatures. However, the only problem is its small size. Even though a bottle of it might be useful for tiny projects, you will need to purchase multiples to finish larger projects or bond larger surfaces. 

3. Rutland 500°RTV High Heat Silicone

Rutland is a well-known brand when it comes to buying stove maintenance products. Keeping the heat in mind, Rutland has come up with this silicone-based heat-resistant glue that works well for many other projects. The best part is that it can be used easily by anyone looking forward to bonding different materials. 

Right off the bat, we were impressed by the packaging of this adhesive. It comes in a handy tube with an extended tip at the end for easy application. If you're getting the glue to attach fireplace inserts or ceramic tiles around the fireplace, this adhesive would be a good option. 

Now, coming to the heat resistance of this adhesive, it's able to withstand temperatures up to 500°F. The upper limit is good for working on different surfaces, including rubber, glass, cement, metal, brick, and stone. Moreover, the bond is durable yet flexible to match the needs of specific projects. 

Furthermore, while buying heat-resistant glue, you need to find more about its color, and this glue comes in a black finish. Hence, you can use it on similar colored surfaces without worrying about painting over the glue. 

To be honest, this is one of the best glues with heat resistance that we have tried. But, the only problem is that it comes in single-use packaging. This is great for someone looking forward to using the whole glue at once, but it will cause wastage for tiny projects. 

4. Henkel Corporation Loctite Stik n' Seal Extreme Conditions Adhesive ‎

When it comes to getting adhesive for any project, one of the brands that can be trusted is Henkel Corporation. The Loctite adhesives from the company have always been a rage, and this heat-resistant glue is no different. So, let's check out all the features that make it a worthy product. 

A common problem seen in adhesives is that of messy applications, especially on narrow surfaces. But, that won't be a problem with this adhesive as it comes with a precision tip. With the right pressure, you can place the tiniest dots or lines of glue on a surface for mess-free bonding. 

However, the best thing about this heat-resistant glue is its ability to bond wet surfaces. So, if you have any materials that would be in regular contact with water, this glue would be the right choice. Henkel Corporation recommends using it on windows, gaskets, weather-stripping, as well as to use on boats or cars. 

Furthermore, this adhesive becomes inert once dried, so you can easily use it around your household without worrying about safety. And it has a low-odor formula, making it perfect for anyone who doesn't like strong smells. 

We don't really have any drawbacks regarding the adhesive itself. However, we would have liked it even more if Henkel Corporation provided it with better packaging. It's quite challenging to remove the tube from its cardboard and plastic housing before you can start using the product. 

5. Rutland 600-Degree RTV Silicone Seal Cartridge 

You must have guessed by now that Rutland has one of the best heat resistance ranges when it comes to adhesives. Compared to the product we have already mentioned, this has one of the highest heat resistance capabilities. So, let's check out all its features to know if it would be helpful for you. 

Let's start by mentioning the most important quality of this glue. The temperature resistance of this product is up to 600°F, making it great for projects where the surfaces would have continuous heat exposure. Even the brand recommends this for use near ovens, fireplaces, stoves, and heaters.

Additionally, this adhesive is suitable for bonding multiple surfaces and can work as a sealant. As the bond is tough yet flexible, you can expect the glue to last for a long time. It even has the power to prevent smoke or gas from preventing stoves and ovens. 

Moreover, we like the amount of product that you get. 10.3 fluid ounces or 304 milliliters is enough to use in several projects, and you only need the tiniest amount to form a strong bond. 

To be honest, we cannot question the high-temperature resistance of this adhesive because of its superior quality. However, the only thing missing in this glue is the feature of water resistance. Even though it can stop small leaks, we wouldn't trust it for repairing water pipes or similar surfaces that regularly come in contact with water. 

6. J-B Weld HighHeat 500 Degree Epoxy Putty 

When searching for the best heat-resistant glues, we didn't come across many epoxy-based options. But, this product from J-B Weld has to be one of the most popular epoxy putty adhesives available on the market. And, we liked that it works at a diverse temperature range to make the product great for versatile projects. 

Are you tired of epoxy putties that can't resist higher temperatures? Don't worry, as this one from J-B Weld is one of the best high-temperature adhesives with an epoxy base. When applied, the putty can withstand a continuous high-temperature of up to 450°F and an intermittent heat of up to 500°F. 

However, the best part of using this epoxy putty is that it's three times stronger than the other options available on the market. So, irrespective of what project you are working on, this putty wouldn't develop cracks. 

Furthermore, this is one of the fastest drying epoxy putties we have come across. It takes only an hour to dry, and the hold is pretty strong. You can also expect it to have a functional cure within eight hours, but it's better to wait 24 hours before using the glued area. 

This isn't a drawback of this particular adhesive, but there's a learning curve associated with any epoxy putty. As a beginner, you'll need to get a hold on how to get the perfect consistency or thickness to make the surfaces stick. However, applying this putty is pretty straightforward once you get the hang of it. 

7. Krazy Glue Maximum Bond Super Glue 

When it comes to looking for the best adhesives, most of us gravitate towards a brand like Elmer's. This is another great glue from the house meant to have heat, shock, and impact resistance. So, we definitely had to include this versatile product in our list of best heat-resistant glues. 

Most of us are tired of using super glue tubes that don't seem to work or have fragile bonds. But, things are going to be different on using this Krazy Glue as it's meant for the maximum bond. Apart from drying pretty fast, the glue doesn't budge even when you put pressure on it. 

However, the best thing about this glue has to be the thick no-run gel consistency. If you have been trying to find glue for vertical surfaces, this Krazy Glue would be a great choice. The ultra-thick consistency also lets you bond uneven and mismatched surfaces. 

What's more, this versatile heat-resistant adhesive works for both porous and non-porous surfaces like ceramic, stone, cement, plastic, rubber, and vinyl. So, you don't need to worry about buying multiple tubes of glue. 

Coming from the house of Elmer's, this Krazy glue is a great product. But, it's priced higher than other similar products available on the market. We expected a bit more product for its price, especially as it's recommended to be used for big projects. So, your costs may go up when buying multiple tubes of this glue. 

8. ‎Permatex High-Temp Red RTV Silicone Gasket

Are you tired of changing gaskets and finding that they break in a few days? Don't worry, as Permatex brings to you a unique adhesive that's meant to work as a gasket. It can withstand extreme temperatures, making it perfect for taking the place of most gaskets you will come across in everyday life. 

When it comes to gaskets, a common problem seen with them is cracking under high temperatures. But, that won't be a problem when you use this adhesive as it forms a tough and flexible bond that can resist cracking. Similarly, the bond won't shrink when the temperatures begin to drop. 

Moreover, this OEM-certified adhesive can be layered on pre-cut gaskets to increase its durability. It's suitable for heavy-duty use, and the bright red color makes it easy for you to see the adhesive during application. 

Further, one of the best things about this product is the straightforward application process. Just clean the surface of any dust and oil before applying the product to get the best bond. And, the glue dries in 24 hours, making it quite useful to be used in everyday objects. 

One of the only drawbacks of this product is that it isn't made of sensor-safe silicone which can be a let down for some. But, don't worry, as Permatex has a similar product in its extreme temperature resistance range that would work well. 

Heat Resistant Glue Buying Guide 

When choosing the best heat-resistant glue, you need to know some essential points that'll help to make the right decision. As mending or bonding materials are often based on specific projects, skipping any points may leave you with completely unusable glue. So, let's check out these key points. 

1. Curing Time

One of the most important things to check while buying any adhesive is its curing time. Even though it may vary between brands, you need to find a glue that has a curing time based on your project. That's because if the adhesive you chose has a speedy curing time, the threshold to change the placement is quite low. 

In the case of gorilla glue or super glue, the drying time is very low. Having said that, even though most glues would hold the materials within seconds, it still needs to cure for 24 - 48 hours to set completely. So, keep these things in mind before making your choice. 

2. Viscosity

Another point to note is the viscosity of an adhesive. You might find some glues to be too thick while others have a more watery consistency. It's common to skip thinking about the viscosity, but this point is essential as you need the right glue to work on vertical surfaces. 

Most of the glues that have watery consistently don't work for vertical surfaces as it drips down and makes it hard for the surfaces to bond. A tip is to check for glues that specifically mention working on mismatched and vertical surfaces to get the right glue with proper viscosity. 

3. Temperature Resistance

Even though a glue might be listed as a heat-resistant adhesive, it may not be able to stand the high temperatures. Hence, whenever you look for a high-temperature adhesive, try to find its working threshold. If you are going to use the glue on a surface that gets extremely hot, then opting for a heavy-duty construction adhesive might work better.  

4. Materials To Bond

Hands down, this is the most crucial feature to check in any adhesive to get the desired bond. Most brands do specify the materials that can be bonded using the glue. You need to make sure that the glue will create a permanent bond that wouldn't crack or separate under pressure or high temperatures. 

Moreover, while working with some materials like metal, glass, and rubber, you would need to buy special glues to make the bond long-lasting. These days, there are several options for adhesives that can be used on multiple materials. 

5. Other Features

Along with the points that we have already mentioned, there are some other things you may need to find out about glue. The first one being, its suitability for indoor and outdoor use. Another thing to check for is shock and impact resistance. Without this, your project can crack when put under pressure or in extreme temperatures. 

Furthermore, if you are getting the glue for working on kitchen utensils, make sure it's food safe and dishwasher safe. At the same time, look for waterproof adhesives for the bond to last for long. 

And, if you're sensitive to smell, always go for adhesives with a low odor formula to avoid discomfort while working.

So, that's everything we had to tell you about getting the best heat-resistant glue for your projects. We do hope that you will get your product of choice from our suggestions. However, do remember that varied projects may call for special adhesives for the best bonds. 

Among our recommendations, we would suggest the Gorilla heavy duty construction adhesive looking for bonding different types of materials at an affordable cost. 

On the other hand, the J-B Weld ‎ExtremeHeat high-temperature resistant metallic paste is excellent for bonding iron, steel, or other metals. But, you may need to get multiple bottles for bigger projects. 

With that, we come to an end. Do let us know if you have any queries regarding any of our suggestions. 

Till then, goodbye, and take care!