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
33ft Clear Mounting Tape - Acrylic Adhesive Double Sided Adhesive Foam Tape 10m X 10mm Weatherproof Heavy Duty Glue, Heat Resistant Perfect for LED Light Strip Channel,Auto,Household,and More
  • Dimension: 0.4in (10mm) wide and 11yards long
  • REPLACEMENT: A choice replacement for screws, nails, bolts to mount kitchen and bathroom accessories and decors.Best for projects where typical fasteners won’t work and you need a clear finish;
  • HIGH PERFORMANCE: It is weather-resistant double sided mounting tape that holds items securely and rigidly both indoor and outdoor. Adhesive well under high temperature and low temperature condition, Long term temperature resistance: 80℃. Short term temperature resistance: 150℃.
  • FEATURES: This virtually invisible and removable clear mounting tape with high initial bonding strength can permanently bond to most surfaces without leaving messy residues.
  • WIDE USES - This mounting tape can be applied on any clean surface such as wood, metal, concrete, bricks and plastic. Designed for the attachment of a wide variety of automotive exterior and interior trim. Due to its high performance like high temperature resistance, it's ideal for mounting StarlandLed LED strip light channels/LED Aluminum Channels.
Bestseller No. 3
UV Light Curing Glue Liquid Plastic Welder Adhesive Kit 5 Seconds Fix/Fill/Seal/Bond/Repair Almost Anything - Waterproof and Heat-Resistant-(4g+8g Bonus)
  • Not A Normal Glue,Much Stronger Than Any Other Glue Guaranteed, Fix Other Glue Cannot and You Can Even Build Up Material with It, and That Material is Structually Strong. Magical for Small Parts that Demand Great Strength
  • Repair Almost Anything: Plastic,Glass,Wood,Metal,Fabric,Stainless Steel, PVC,ABS,Acrylic,Ceramic And More. From the Precious Jewelry to Multiple Craft Projects with the Lowest Cost
  • Creates a Permanent Bond In 5-10 Seconds With the Prep Pad Clean The Bonding Face And Cure&Shape Under The UV Light. The UV Curing is Very Fast and Makes Precarious Repairs Possible Without Difficult Clips and Jigs to Hold a Complex Joint While Glue Dires
  • Safe,Non-hazardous Formula,Water Proof and Heat Resistant. Used Advanced Technology, It is also Environmental Safe and Passed the EU 174 Project Testing
  • Kit Includes: (1) 1 Glue Pen + (2) 8g Refill+(1)UV Light With Battery. Please Follow the Instruction on the Backside.
Bestseller No. 4
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. 5
Cricut HEAT RESISTANT TAPE .75" x 52'
  • FEATURES: Each roll of Cricut Heat-Resistant Tape is 2 cm x 16 m (approximately 52 ft) and is resistant up to resistant up to 400°F (205°C). It leaves no residue, so you won't have to worry about it ruining your final product.
  • HEAT-RESISTANT TAPE: Ensure your designs hold that perfect position throughout the entire heat-transfer application process with this high-temperature resistant tape. Safely secure custom designs to T-shirts, totes, baby bodysuits, and more.
  • CRICUT TOOLS: At Cricut, we offer a wide range of accessories for every craft and crafter. Cricut Markers are compatible with Cricut Maker and Cricut Explore family machines. Use our wide range of Infusible Ink products to create unique T-shirts, coasters, totes, and more.
  • VERSATILE: This versatile Heat-Resistant Tape can handle the heat from professional heat presses and is ideal for adhering heat-transfer vinyl (HTV), iron-on, Infusible Ink designs, and other heat-transfer materials to a variety of base materials. Recommended for use with Cricut EasyPress, household iron, or any heat press.
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

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.
Woman using a gluestick
Woman using a gluestick

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