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What is the best heat resistant glue?
When needing to make or repair something that is often exposed to extreme heat, it’s important to have the peace of mind that the glue you use for it with be able to withstand that heat. Whether it be for fireplaces, industrial equipment, or even just the interior of a car on a hot day, you glue needs to hold strong. Here are the best heat-resistant glues.
Table of Contents
Bestseller No. 1
Aron Alpha Industrial Krazy Glue-AA900 Aron Alpha 414TXZ (6,000 cps) High Heat (250 F) and Impact Resistant Instant Adhesive 50 g (1.76 oz) Bottle,clear
- Fast curing, ethyl-2 cyanoacrylate instant adhesive; Designed for applications requiring high heat resistance, high peeling resistance, high impact resistance and thermal shock resistance
- No run, gel viscosity (6,000 cps) for gap filling up to 0.008 inches
- Fixture time within 3 seconds on rigid PVC; 5 seconds on Neoprene; 10 seconds on Steel and 30 seconds on Aluminum; Full cure 24 hours
- Shear strength (PSI) on rigid PVC, : 3,600, Steel: 4,300; Impact resistance bonding steel to steel is 7 ft-lbs per square inch; Heat resistance bonding steel to steel after exposure 248 F x 24 hours is 1,700 PSI
- Designed for metal and rubber surfaces and can withstand extreme hot and cold temperatures
Bestseller No. 2
Rutland 500°RTV High Heat Silicone (Black) 2.7 Oz. Tube
- Rutland High Temperature Silicone is a great solution to your sealant and adhesive needs
- Forms a tough and flexible seal
- Will adhere to most clean surfaces including: glass, metal, plastics, fiberglass, wood, brick, and stone.
- Seal fireplace inserts, repair solar panels, apply ceramic tiles to your fireplace surround or heat shielding behind your stove, the uses are endless
- Rated to withstand up to 500° F (260° C)
Bestseller No. 3
Aron Alpha 412XZ (100 cps) High Heat (250 F) and Impact Resistant Instant Adhesive 50 g (1.76 oz) Bottle
- Fast curing, ethyl-2 cyanoacrylate instant adhesive; Designed for applications requiring high heat resistance, high peeling resistance, high impact resistance and thermal shock resistance
- Medium viscosity (85 cps) type for intermediate gap filling up to 0.006 inches
- Fixture time within 3 seconds on rigid PVC; 5 seconds on Neoprene; 10 seconds on Steel and 30 seconds on Aluminum; Full cure 24 hours
- Shear strength (PSI) on rigid PVC, : 4,300, Steel: 5,000; Impact resistance bonding steel to steel is 7 ft-lbs per square inch; Heat resistance bonding steel to steel after exposure to 248 F x 24 hours is 2,100 PSI
SaleBestseller No. 4
Surebonder Large Silicone Mat with Ruler for Hot Glue Gun Projects, Flexible & Heat Resistant Surface for Easy Cleanup Or Use for Tracing Projects, Size: 19" x 19" (6201)
- PROTECTS YOUR WORKSTATION FROM GLUE DRIPPINGS - At 2 millimeters of thickness, this oversize sized mat lightly grips your work surface to protect it from excess or accidental glue discharge as you use your glue gun.
- 16 INCH RULER DISPLAY - A 16-inch ruler is embossed on the bottom right side for accurate measurement and convenience.
- PEEL OFF DRIED GLUE WITH EASE - The non-stick, heat-resistant surface allows you to easily peel off dried glue for recycling or use the pad for tracing projects.
- EASY CLEANUP - The ability to peel off the excess hot glue makes cleaning up after a project a breeze.
- BRIGHT GREEN - The neon green color of the glue mat makes glue drips easily visible, so there is no need to double-check!
Bestseller No. 5
Aron Alpha 414TXZ (6,000 cps) High Heat (250 F) and Impact Resistant Instant Adhesive 500 g (1.1 pound) Bottle
- Fast curing, cyanoacrylate instant adhesive; Designed for applications requiring high heat resistance, high peeling resistance, high impact resistance and thermal shock resistance
- No run gel viscosity (6, 000 cps) for gap filling up to 0. 008 inches
- Fixture time within 3 seconds on rigid PVC; 5 seconds on Neoprene; 10 seconds on Steel and 30 seconds on Aluminum; Full cure 24 hours
- Shear strength (PSI) on rigid PVC, : 3, 600, Steel: 4, 300. Impact resistance bonding steel to steel is 7 ft-lbs per square inch. Heat resistance bonding steel to steel after exposure 248 F x 24 hours is 1, 700 PSI
- Designed for metal and rubber surfaces and can withstand extreme hot and cold temperatures
The best heat-resistant glue is J-B Weld ExtremeHeat High Temperature Resistant Metallic Paste. Compatible with metals like iron and steel, J-B Weld ExtremeHeat High Temperature Resistant Metallic Paste can withstand temperatures upwards of 1000°F / 537°C and is so strong that it can be a replacement for torch welding. J-B Weld ExtremeHeat High Temperature Resistant Metallic Paste can be used in both professional and home applications and is perfect for things such as outdoor grills, water heaters, pipe connections, mufflers, exhaust manifolds, catalytic converters, fire boxes, and gas and commercial furnaces.
Best Heat-Resistant Silicone Glue
The best heat-resistant silicone glue is Rutland 500°RTV High Heat Silicone Sealant. Perfect for sealing fireplace inserts, Rutland 500°RTV High Heat Silicone Sealant can adhere to just about any material, including but not limited to brick, metal, glass, fiberglass, aluminum, plastics, wood, and stone. Rutland 500°RTV High Heat Silicone Sealant can also be used for repairing solar panels and heat sealing behind stoves and can withstand temperatures upwards of 500° F/260° C.
How to Use Heat-Resistant Glue
- First, read the instructions on your adhesive as some processes may vary and you need to be sure you're doing everything correctly.
- Next, clean both of the substrates with acetone or isopropanol to get rid of any oil or grease.
- After that you can roughen up your substrates as necessary, especially if they are metal.
- Next, put your adhesive of choice onto both of the subrates before pressing them together. Be sure to check on the instructions to make sure that you are using the correct amount of pressure as some will require more than others.
- Finally, check to see if your adhesive needs to be cured at any specific temperature. If room temperature is fine, you can just leave it to cure comepletely.
Best Heat-Resistant Glue for Plastic
The best heat-resistant glue for plastic is Loctite Stik n’ Seal Extreme Conditions Adhesive. Loctite Stik n’ Seal Extreme Conditions Adhesive is resistant to more than just extreme heat, but also extreme cold and moisture as well. It can even be applied onto wet surfaces and still hold just as strong. And while Loctite Stik n’ Seal Extreme Conditions Adhesive is a great heat resistant adhesive for plastic, it also works well on leather, glass, mirror, fabric, ceramic, wood, stone, concrete, and metal-to-porous surfaces.
Best Heat-Resistant Glue for Outdoors
The best heat-resistant glue for outdoors is Permatex High-Temp Red RTV Silicone Gasket. Permatex High-Temp Red RTV Silicone Gasket is resistant to extreme conditions both indoors and out and has a temperature resistance range of -65°F to 650°F. The suggested applications for Permatex High-Temp Red RTV Silicone Gasket are oil pans, timing covers, valve covers, thermostat housings, water pumps, and transmission pans.
The best heat-resistant glue is J-B Weld ExtremeHeat High Temperature Resistant Metallic Paste. The best heat-resistant silicone glue is Rutland 500°RTV High Heat Silicone Sealant. The best heat-resistant glue for plastic is Loctite Stik n’ Seal Extreme Conditions Adhesive. And the best heat-resistant glue for outdoors is Permatex High-Temp Red RTV Silicone Gasket.
There are some that are, yes. But not every heat-resistant glue is also totally waterproof as well, so make sure you check your glue.
No, J-B Weld ExtremeHeat High Temperature Resistant Metallic Paste cannot be used to repair a stove burner grate. The heat is not the issue, but rather that this adhesive cannot offer enough structural support.
No, Rutland 500°RTV High Heat Silicone Sealant is not food-safe and should not be used anywhere that will come into direct contact with food.
For consistent exposure, Loctite Stik n’ Seal Extreme Conditions Adhesive can withstand a temperature range of -56F° to 176F° and for brief temperature exposure it can withstand a temperature range of -56°F to 248°F.
Yes, Permatex High-Temp Red RTV Silicone Gasket works great for repairing exhaust pipes.
