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J-B Weld 8297 HighHeat 500 Degree Epoxy Putty Stick - 2 oz. , Grey

4.4 4.4 out of 5 stars 6,285 ratings

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Purchase options and add-ons

Brand J-B Weld
Material Plastic
Compatible Material Metal
Item Form Putty
Color Grey

About this item

  • 3 times stronger at high temperatures
  • Withstands continuous heat up to 450 degrees Fahrenheit, and intermittent heat up to 500 degrees
  • Strength of 800 PSI at room temperature and 600 PSI at 400 degrees Fahrenheit
  • Perfect for tail pipes, mufflers, machinery, engine blocks, and exhaust manifolds
  • Special Shipping Information: This item cannot be returned and has additional shipping restrictions
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From the manufacturer

J-B Weld HighHeat
HighHeat

Epoxy Putty

HighHeat is a hand-mixable epoxy putty stick specifically formulated to bond and repair materials that will be exposed to high temperatures in automotive and industrial maintenance applications. It cures to a tough, hard bond with little to no shrinkage. This industrial-strength product outperforms conventional epoxy putties at high temperatures and sents in 1 hour at room temperature. After 8 hours it can be drilled, tapped, machined, ground, filed and painted. HighHeat is rated at a tensile strength of 800 PSI and cures to a machine grey in color. It is able to withstand continuous heat exposure of 400°F and intermittent heat exposure of 550°F.

HighHeat Specs

HighHeat Great For

HighHeat Use On

Cut

Knead

Apply

J-B Weld HighHeat J-B Weld Extreme Heat Fiber Fix Heat Wrap J-B Weld High Heat Silicone J-B Weld SteelStik J-B Weld Original Cold Weld
J-B Weld HighHeat J-B Weld ExtremeHeat FiberFix Heat Wrap J-B Weld Hi-Temp RTV Silicone J-B Weld SteelStik J-B Weld The Original Cold Weld
Customer Reviews
4.4 out of 5 stars
6,285
4.2 out of 5 stars
9,868
3.9 out of 5 stars
3,768
4.6 out of 5 stars
13,211
4.5 out of 5 stars
12,780
4.6 out of 5 stars
20,834
Product Description HighHeat is hand-mixable two part epoxy putty stick that is forumlated to repair and rebuild material that will be exposed to high temperatures in automotive and industrial maintenance applications. ExtremeHeat is a temperture resistent metallic paste that is designed to fill holes and cracks in metal surfaces. FiberFix HeatWrap is fiberglass-woven wrap impregnated with resin that is water activated and creates a strong structural repair on various high temperature fixtures. Hi-Temp Red RTV is a gasket maker and sealant designed to resistent temperatures up to 650°F. SteelStik is a hand-mixable two part epoxy putty stick that is steel reineforced and non-rusting allowing for quick repairs on anyhing made of metal and more! J-B Weld is The Original Cold Weld two-party epoxy system that provides strong, lasting repairs to many surfaces.
Surface Application Exhaust Amnifolds, Tail Pipes, Mufflers, Engine Blocks, Duct Work, Machinery and other high temp. equipment Exhaust manifolds, heat exchanges, mufflers, engine blocks, firebox/fireplace, outdoor grills & manifolds. Tailpipe & Mufflers, Hot Water Pipe, Steam Pipe and more! Oil Pans, Valve Covers, Exhaust Manifolds, Water Pumps and more! Iron & Stainless Steel, Copper & Brass, Aluminum & Broonze, Fiberglass and Plastic & PVC. Great For: Metal, Wood, Plastic, Tile, PVC, Ceramic, Fiberglass, Concrete & More
Cure Color Machine Grey Machine Grey Dark Clay Red Dark Grey Dark Grey
Set Time 1 Hour 1 Hour 5-10 Minutes 1 Hour 5 Minutes 4-6 Hours
Cure Time Functional Cure in 8 Hours 24 Hours With Heat: 1 Hour; No Heat: 24 Hours 1 Hour 1 Hour 15-24 Hours
Strength (PSI) 800 PSI at Room Temp, 600 PSI at 400° F Withstand 2400° of continuous heat 1707 PSI Heat Resistant: Up to 650°F 900 PSI 5020 PSI

Product Description

J-B Weld High Heat Epoxy Putty High Heat is a hand mixable epoxy putty stick specifically formulated to bond and repair materials that will be exposed to high temperatures in automotive and industrial maintenance applications. It cures to a tough, hard bond with little to no shrinkage. This industrial-strength product outperforms conventional epoxy putties at high temperatures and sets in 1 hour at room temperature. After 8 hours, it can be drilled, tapped, machined, ground, filed and painted. High Heat is rated at a tensile strength of 800 PSI and cures to a machine grey in color. It is able to withstand continuous heat exposure of 400 degrees F and intermittent heat exposure to 500 degrees F. Use on: Automotive Metal And more Instructions 1. Cut: Remove required amount of putty. 2. Mix: Thoroughly knead putty with fingers to a uniform color. 3. Apply: Press putty firmly to the surface to be repaired. J-B Weld is proudly made in the USA

Product information

Technical Details

Additional Information

Warranty & Support

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J-B Weld 8297 HighHeat 500 Degree Epoxy Putty Stick - 2 oz. , Grey


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What's in the box

  • JBWeld 8297
  • Compare with similar items

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    J-B Weld 8297 HighHeat 500 Degree Epoxy Putty Stick - 2 oz. , Grey
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    Added to Cart
    Price-7% $9.30
    List:$9.96
    $12.20$9.88$7.19$11.99$8.68
    Delivery
    Get it as soon as Tuesday, Apr 2
    Get it as soon as Tuesday, Apr 2
    Get it as soon as Tuesday, Apr 2
    Get it as soon as Tuesday, Apr 2
    Get it as soon as Tuesday, Apr 2
    Customer Ratings
    Easy to use
    4.2
    4.4
    4.2
    4.5
    4.5
    4.5
    Adhesion
    3.9
    4.3
    4.1
    3.9
    4.4
    4.4
    Value for money
    4.2
    4.0
    4.5
    3.5
    Sold By
    Amazon.com
    Amazon.com
    Small Town Premium Supplements
    Amazon.com
    Wansiven
    Amazon.com
    color
    Grey
    Dark Grey
    Black
    Black
    Dark Grey
    compatible material
    Metal
    Pvc,aluminum,stainless Steel,plastic,metal,steel
    Plastic, Fiberglass, Metal, Rubber
    Pvc,wood,ceramic,plastic,metal,steel
    Metal,steel
    Polyvinyl Chloride
    volume
    2 fluid ounces
    25 milliliters
    25 milliliters
    25 milliliters
    number of items
    1
    2
    1
    1
    2
    1
    water resistance
    not water resistant
    waterproof
    water resistant
    waterproof
    waterproof
    container type
    Cartridge
    Can
    Syringe
    Can
    Can, Tube
    Can
    full cure time
    8 hours hours
    30 minutes
    24 hours hours
    1 hours hours

    Looking for specific info?

    Customer reviews

    4.4 out of 5 stars
    4.4 out of 5
    6,285 global ratings

    Customers say

    Customers like the performance and ease of use of the epoxy product. For example, they mention it works great, is easy to apply, and comes through fantastically. That said, opinions are mixed on durability, heat resistance, leaking, adhesion, and value.

    AI-generated from the text of customer reviews

    202 customers mention163 positive39 negative

    Customers like the performance of the epoxy product. They mention that it works well as advertised, and produces excellent results. Some say that the product works like concrete and can be used to fix a radiator. Overall, most are satisfied with the performance and quality of this product.

    "...Outstanding product!" Read more

    "...Worked great, The should call this "Pre-Powder Coat Patch"." Read more

    "This stuff works. They have all kinds for all kinds of bonds. I use it all the time." Read more

    "Worked great" Read more

    60 customers mention58 positive2 negative

    Customers find the product easy to use. They mention it works like putty, is easy to apply over the hole, and is ready to use without any welding.

    "...Very easy to work with while wearing nitrile gloves, easy to shape, sets pretty sturdy while you're working it, and cures within 24 hours...." Read more

    "...Was blown away by how easy it was to use and how durable it is" Read more

    "This putty was easy to apply over the hole...." Read more

    "...the two mixes are in separate containers, they are still soft, ready to use and are able to be used without the hardening that always seems to..." Read more

    34 customers mention31 positive3 negative

    Customers are satisfied with the quality of the epoxy. They mention that it is a good epoxy, absolutely brilliant, and legit. Some say that they used it to patch a high heat part on their engine and that it made the edge that broke off solid.

    "...that the manufactorer never intended it to be used this way, but it is fantastic. The photo is of my gas fireplace grill...." Read more

    "This stuff is great, I fixed a cracked exhaust manifold on my truck with it...." Read more

    "Doesn't look perfect (texture), but this stuff is no joke!! Lantern looks fine and this made the edge that broke off solid...." Read more

    "So far this stuff is great. Hasn’t come off or flaked yet...." Read more

    94 customers mention44 positive50 negative

    Customers are mixed about the durability of the product. Some mention that it holds strong, is hard as a rock, and withstands high heat. However, others say that it comes apart again, becomes brittle, and starts flaking off.

    "...it to the broken weld spots in my muffler, but after few days it fell back and did not hold the muffler...." Read more

    "...containers, they are still soft, ready to use and are able to be used without the hardening that always seems to happen with pre- mixed products" Read more

    "...It smells terrible when it gets hot. Also after 500 miles it’s now cracking. I hit it with my car key and a chunk fell off...." Read more

    "...My 3D-Printed part, which forms the "skeleton" for the clay, held so well... in fact, i didn't like how it was positioned, and thought maybe I could..." Read more

    81 customers mention49 positive32 negative

    Customers are mixed about the heat resistance of the product. Some mention that it holds up to the heat, while others say that it doesn't actually support high temperatures.

    "...The heat doesn't affect the aluminum cover even in high temperatures...." Read more

    "...No leaks now. The extreme heat version of this is horrible. It is not water proof and will begin to leak again. Use this. It works." Read more

    "...easy to work with while wearing nitrile gloves, easy to shape, sets pretty sturdy while you're working it, and cures within 24 hours...." Read more

    "...Was blown away by how easy it was to use and how durable it is" Read more

    52 customers mention30 positive22 negative

    Customers are mixed about the leaking. Some mention that it sets up quickly and seals the leaky pipe, while others say that it started leaking again after about a week.

    "...Let cure of a day. Used small heater during the last 2-3 hours. No leaks now. The extreme heat version of this is horrible...." Read more

    "...if I should have used a bigger piece of it because it started leaking again after about a week." Read more

    "This putty worked for sealing the crack in my car’s radiator. It’s a 2001 Toyota Camry. Now I’m no longer losing any coolant...." Read more

    "Goof value overall, performed very well to seal a leak on the heat expansion chamber, dried on time, make sure to follow instructions to the dot,..." Read more

    43 customers mention17 positive26 negative

    Customers have mixed opinions about the adhesion of the product. Some mention that it sticks well, while others say that it doesn't stick well to some plastics.

    "...Even when used on a degreased and scuffed surface, the kneaded putty did not adhere well...." Read more

    "...been months and I’ve even used very high temp cleaning cycles and it never budges. Just make sure you don’t want whatever it is to come back off...." Read more

    "...It failed to adhere to the plastic. But this stuff can be molded like clay and will adhere to almost any surface...." Read more

    "...fine--so far it is standing up to the heat just fine, and the adhesion is good too...." Read more

    36 customers mention13 positive23 negative

    Customers are mixed about the value of the epoxy. Some say it's excellent value, and saves them money. However, others say that it'll be an utter failure and not good for use on an ATV exhaust hole.

    "...the corner of the skillet up with a piece of wood--pretty crude and sub-optimal...." Read more

    "...We will see what happens. Cheaper than a new grill!" Read more

    "...Waste of money." Read more

    "...Terrible product , not meant for high temperatures as it claims. Save yourself the headache and terrible smell...." Read more

    Holds great!
    5 Stars
    Holds great!
    I used it on my stove trim that had fallen off. It’s been months and I’ve even used very high temp cleaning cycles and it never budges. Just make sure you don’t want whatever it is to come back off. Because once it dries, you’re not getting it off again!
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    Top reviews from the United States

    Reviewed in the United States on December 12, 2023
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    Reviewed in the United States on August 19, 2023
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    5.0 out of 5 stars Worked amazingly and saved a bunch of money
    Reviewed in the United States on August 19, 2023
    I had a pretty decent exhaust leak at one of the connection flanges down by the muffler. I cleaned all the loose material out of the flange and packed it with JB weld and let it sit overnight to ensure it cured. The exhaust is whisper quiet and it's held up for 6 months so far. I have no reason to believe it'll fail anytime soon either. Was blown away by how easy it was to use and how durable it is
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    7 people found this helpful
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    Reviewed in the United States on March 16, 2024
    Reviewed in the United States on December 10, 2023
    Reviewed in the United States on September 9, 2023
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    Reviewed in the United States on March 23, 2024

    Top reviews from other countries

    Translate all reviews to English
    manuel tabogader
    5.0 out of 5 stars I like this product
    Reviewed in Canada on April 11, 2023
    One person found this helpful
    Report
    Alan
    5.0 out of 5 stars Good stuff
    Reviewed in the United Kingdom on March 16, 2024
    HUSSEIN
    4.0 out of 5 stars Gut verpackung, sieht gut aus, gerne wieder
    Reviewed in Germany on November 29, 2018
    jaja
    5.0 out of 5 stars très très solide.
    Reviewed in France on August 23, 2017
    One person found this helpful
    Report
    gianluca
    5.0 out of 5 stars ottimo
    Reviewed in Italy on March 14, 2017
    One person found this helpful
    Report