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
Professional Metal Repair Glue by HOLIKA- 2.1oz- Metal to Metal Glue for Heavy Duty for Metal, Plastics and Ceramics,High-Temperature Heat Resistant Epoxy Glue for Welding Steel, Aluminum, and DIY
  • 【Wide application】Suitable for bonding metal, stainless steel, diy crafts, toys, aluminum alloy, metal pipe, metal edge, metal products, etc. It can be used for bonding between metal and metal, metal and other materials, such as metal and plastic, metal and rubber, metal and wood. Metal glue transparent colorless, very durable. Very suitable for bonding process production, diy, daily supplies repair and so on. Glue is suitable for all kinds of uneven, rough, vertical surfaces.
  • 【Super Performance】Cyanoacrylate super glue specially formulated to fix breaks around the home or office and hold stronger. The unique performance instant bonding, can be a few seconds to the material bonding, such as a large number of use, this is the most effective and most economical adhesive.
  • 【Safe and non-toxic】HOLIKA Metal glue produces amazing stickiness, which is a non-toxic and environmentally friendly product. We insist on the production of exclusive super glue for metal formula, which has passed MSDS, SGS and various safety reports. The metal to metal glue is clear, waterproof and environmentally friendly products.
  • 【Please note】Keep away from children. Avoid contact with eyes, skin and clothing. Store in a cool, well-ventilated place, away from heat, sparks and open flames. Keep the container tightly closed until you are ready to use it.
  • 【Thoughtful After-sales Service】If you are not satisfied with metal glue you received, or if the glue overflows due to the shipping process, please feel free to contact us, and we will be happy to provide you with replacement or refund services.
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
Bestseller No. 4
Metal Glue, Casting Metal Repair Glue (A+B), High Temperature Heat Resistant Glue for Metal, AB-Metal Adhesive & Liquid Weld for Metal in lieu of Welding- 50 Gram (PASAWA 1001)
  • welding glue high strength:- a b glue a liquid weld for metal has high strength and can sustain a load upto 2900 Psi, once welding glue is applied and cured properly.
  • Wide-range of applications:- This cold welding liquid can used as metal to metal glue, casting appliance, equally applicable to other surfaces such as wood and concrete. common application as small hole repair in metal , metal to metal adhesive, liquid metal filler, radiator repair and pipe repair.
  • long-lasting Bond Strength: forms a strong and stable permanent bond that should last for ages. Once cured, Metal cast iron magic repair glue forms a strong and stable permanent bond, which should be used for many years. can be shaped, tapped, filed, sanded and drilled depending on its purpose.
  • Simple-to-Use: The preparation and application are simple and easy, Just mix the weld metal repair paste, sets in minutes, and fully cured in 12-24 hours
  • Package-includes: 25 gram of tube A + 25 gram of tube B + Scraper for mixing and applying the metal repair gel to the surface. NOTE: THE PACKAGING SHOWN IN THE PICTURES MAY VARY
SaleBestseller No. 5
Metal Repair Glue, 2 Pack Professional Grade Metal to Metal Glue Heavy Duty for Metal, Plastics and Ceramics, High-Temperature Heat Resistant Epoxy Glue for Welding Steel, Aluminum, and DIY Craft
  • LONG-LASTING BOND STRENGTH: Our metal epoxy glue is of good quality, your repaired products will last for at least one year. Once cured, metal repair glue can form a strong and stable permanent bond. Compared with traditional epoxy, AB epoxy glue is high adhesion and good hardness, and a certain toughness.
  • WIDE APPLICATION: Our metal repair glue is suitable for repairing bonding metals, ceramics, glass, and many plastics. It not only can be used to repair fuel tanks, plumbing, concrete breaks, water tank, and plastic bucket but can be used for boats, cars, fuel tanks, heaters, vases, fence welding car bumpers, and motorcycle crack repair.
  • SAFE AND CLEAN: Our metal to metal glue is a clean, odorless, and environmentally friendly product. We insist on the production of exclusive metal glue formula. We take environmental protection as the concept, to ensure that your repaired products are safe and clean.
  • SIMPLE TO USE: The way to use our metal glue heavy duty is very simple. First, please make the surface clean before the process. Then, Use the pusher to push out the appropriate amount of glue at a 1:1 ratio on a flat surface, and use the stirrer to mix it evenly (usually 5 minutes, if not, it will affect the bonding effect). Last, apply it to the surface and give it 24 hours for full curing.
  • COMPLETE ACCESSORIES: Our metal glue has a complete set of accessories, including A and B metal adhesive (80g*2), disposable gloves*2, wooden stirring rod*4, stirring plate*2. Quickly repair damaged areas, the complete kit is more convenient to use and less likely to get dirty hands or other parts of the home.
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.

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