--- product_id: 82260002 title: "J-B Weld HighHeat" brand: "j-b weld" price: "€ 12.05" currency: EUR in_stock: true reviews_count: 13 category: "J B Weld" url: https://www.desertcart.pt/products/82260002-j-b-weld-highheat store_origin: PT region: Portugal --- # Sets in 1 hour, fully cures in 8 hours Withstands intermittent heat up to 500°F 800 PSI tensile strength at room temp J-B Weld HighHeat **Brand:** j-b weld **Price:** € 12.05 **Availability:** ✅ In Stock ## Summary > 🔥 Fix it once, fix it strong — the heatproof epoxy stick every pro needs! ## Quick Answers - **What is this?** J-B Weld HighHeat by j-b weld - **How much does it cost?** € 12.05 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/82260002-j-b-weld-highheat) ## Best For - j-b weld enthusiasts ## Why This Product - Trusted j-b weld brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rapid DIY Fix:** Sets in just 1 hour and fully cures in 8, so you get durable results without the wait. - • **Machine Grey Finish:** Cures to a sleek, machine grey color that can be drilled, tapped, machined, or painted for a professional look. - • **Heat-Defying Strength:** Engineered to endure continuous heat up to 450°F and intermittent spikes to 500°F—perfect for high-temp repairs. - • **Industrial-Grade Bond:** Delivers 800 PSI tensile strength at room temperature and 600 PSI at 400°F, outperforming conventional epoxies. - • **Versatile Metal Repair:** Ideal for exhaust manifolds, mufflers, engine blocks, and more—your go-to for automotive and industrial maintenance. ## Overview J-B Weld 8297 HighHeat is a hand-mixable, two-part epoxy putty stick designed for high-temperature repairs up to 500°F. It sets in 1 hour and fully cures in 8, forming a tough, machine grey bond with 800 PSI tensile strength at room temperature. Perfect for automotive and industrial applications like exhaust systems and engine blocks, it offers 3x the heat resistance of conventional epoxies and can be drilled or machined after curing. ## 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 Review: Repaired my exhaust with this! Saved me $$$ - This stuff is great! I just used it to patch a cracked exhaust on our Toyota Corolla. I was about to invest 300 and parts plus an hour or two in labor. But when I inspected the exhaust closely from the Cadillac converter all the way back to the muffler. I noticed almost everything was in pretty good shape other than the one spot where there was a hairline fracture. Right after the joint, headed towards the muffler. On a whim, I decided to check on here to see what they had for muffler repair because I hadn’t been pleased with the local advanced auto had on the shelves. I found this and the JB weld muffler repair. I bought both, but I ended up going with this because I thought for my particular situation this would be the best. I’m glad I did. It was really easy to use. I prepped the area by wire brushing around the crack. And then using a rag with isopropyl alcohol to clean before applying. Wasn’t sure how much to use, but I put on a pair of latex gloves and cut approximately half the product to use. I mixed it with my hands while wearing the gloves until it was a uniform color and then I applied it to the crack all the way around the muffler. It was easy to apply and mold into the shape I wanted. It was only like 40° outside, so I propped up a heat gun from a distance and let that hit it for about an hour. After that, I didn’t start the car until the next morning but when I did, it sounded perfect again! So far I’m really happy. I haven’t driven the car much yet so I will keep the review updated. But so far I’m very pleased and hopeful based on other reviews. In my case, I would rate this an incredible value for the money! Review: 100% impressed and satisfied worked perfect, hard as iron when setup - This was awesome, I used it on a metal outdoor firepit and it is still holding up. Easy to mix, sets up quickly and works like a charm Dried hard as iron and I'm certain you could easily drill a hole in it same as iron. 100% impressed and satisfied ## Features - J-B WELD HIGHHEAT: A hand mixable two part epoxy putty stick that is formulated to repair and rebuild materials that will be exposed to high temperatures in automotive and industrial maintenance applications. J-B Weld HighHeat is designed for DIY repairs on exhaust manifolds, tail pipes, mufflers, engine blocks, duct work and other various high temperature projects. - CURE AND SET TIME: After kneading the two part formula together by hand, HighHeat takes 1 hour to set and cures in 8 hours. J-B Weld HighHeat set and cure color is machine grey. - PRODUCT FEATURES AND STRENGTH: J-B Weld HighHeat has lap shear strength of 800 PSI at room temperature and 600 PSI at 400oF (204oC) or more. HighHeat is able to withstand continuous heat up to 450oF (232oC) and intermittent heat of 500oF (260oC). HighHeat is 3x stronger at higher temperatures than conventional epoxy puttys and can be tapped and drilled. - MAJOR USES: Exhaust Manifolds, Tail Pipes, Mufflers, Engine Blocks, Duct Work, Machinery and other high temperature equipment. - DO IT YOURSELF: Big or small, you can DIY it with J-B Weld. Our heavy duty epoxy and adhesives repair & restore it right the first time. J-B Weld delivers superior performance, quality, and results for the World’s Strongest Bond. - 3 times stronger at high temperatures - Withstands continuous heat up to 450 degrees Fahrenheit, and intermittent heat up to 500 degrees Fahrenheit - 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B007PP26RI | | Best Sellers Rank | #3,085 in Automotive ( See Top 100 in Automotive ) #8 in Body Repair Putty | | Brand | J-B Weld | | Brand Name | J-B Weld | | Color | Grey | | Compatible Material | Metal | | Container Type | Tube | | Customer Reviews | 4.4 out of 5 stars 7,549 Reviews | | Full Cure Time | 8 hours | | Global Trade Identification Number | 00043425082978, 06935743366714 | | Included Components | JBWeld 8297 | | Item Form | Putty | | Item Package Quantity | 1 | | Item Type Name | BONDING_ADHESIVES | | Item Weight | 0.07 kg | | Manufacturer | JBWeld | | Material | Epoxy Resin | | Material Type | Epoxy Resin | | Model | 8297 | | Number of Pieces | 1 | | Other Special Features of the Product | High Heat Resistance | | Part Number | 8297 | | Special Feature | High Heat Resistance | | Specific Uses For Product | Automotive, Industrial Maintenance | | Tensile Strength | 4000 psi | | UPC | 043425082978 043425700094 | | Unit Count | 1 Count | | Viscosity Level | Medium | | Volume | 2 fluid ounces | | Warranty Description | Manufacturer Warranty | | Water Resistance Level | Not Water Resistant | ## Product Details - **Brand:** J-B Weld - **Item Form:** Putty - **Material:** Epoxy Resin - **Special Feature:** High Heat Resistance - **Specific Uses For Product:** Automotive, Industrial Maintenance ## Images ![J-B Weld HighHeat - Image 1](https://m.media-amazon.com/images/I/719x-tORrWL.jpg) ## Questions & Answers **Q: can you use this to seal a leaking transfer case seal? (would work ? instead of having to replace the seal?)** A: I guess it depends on if you ever want to fix it right. Once you use this stuff thats how it will be forever, it's not pliable or removable **Q: I striped out an oil drain plug on a generator motor. But there is a second drain on the other side of the engine. Will this seal in oily environment?** A: if you are thinking about plugging the hole, yes, but if you have access to the inside of the pan i would use it to attach a plate to the inside. you could also grind down the outside free of rust / dirt and use it to bond a plate to the outside. i would be concerned about just using it as a plug, where using it to bond something to the pan would not span a 1/2 to 5/8 in. gap. you might even use a quarter or a nickle or something stainless that will not rust. after it sets, hit it with some high temp paint. **Q: Can you use this on ceramic pottery or is it just for metal?** A: You can,but for ceramic you dont need the high heat one, just the regular temperature version. This one is for exhausts etc.. **Q: Will work to repain a hole in car oil pan under the engine?** A: Probably. Make sure it is really clean, sand the area where the epoxy goes. Maybe plug the hole with a broken off toothpick if it is still on the car to keep oil from seeping into the epoxy. Put a glob the size of a quarter and make sure the toothpick is covered. Put duct tape over the epoxy until hard. Should work. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Repaired my exhaust with this! Saved me $$$ *by M***S on November 25, 2025* This stuff is great! I just used it to patch a cracked exhaust on our Toyota Corolla. I was about to invest 300 and parts plus an hour or two in labor. But when I inspected the exhaust closely from the Cadillac converter all the way back to the muffler. I noticed almost everything was in pretty good shape other than the one spot where there was a hairline fracture. Right after the joint, headed towards the muffler. On a whim, I decided to check on here to see what they had for muffler repair because I hadn’t been pleased with the local advanced auto had on the shelves. I found this and the JB weld muffler repair. I bought both, but I ended up going with this because I thought for my particular situation this would be the best. I’m glad I did. It was really easy to use. I prepped the area by wire brushing around the crack. And then using a rag with isopropyl alcohol to clean before applying. Wasn’t sure how much to use, but I put on a pair of latex gloves and cut approximately half the product to use. I mixed it with my hands while wearing the gloves until it was a uniform color and then I applied it to the crack all the way around the muffler. It was easy to apply and mold into the shape I wanted. It was only like 40° outside, so I propped up a heat gun from a distance and let that hit it for about an hour. After that, I didn’t start the car until the next morning but when I did, it sounded perfect again! So far I’m really happy. I haven’t driven the car much yet so I will keep the review updated. But so far I’m very pleased and hopeful based on other reviews. In my case, I would rate this an incredible value for the money! ### ⭐⭐⭐⭐⭐ 100% impressed and satisfied worked perfect, hard as iron when setup *by M***G on August 10, 2026* This was awesome, I used it on a metal outdoor firepit and it is still holding up. Easy to mix, sets up quickly and works like a charm Dried hard as iron and I'm certain you could easily drill a hole in it same as iron. 100% impressed and satisfied ### ⭐⭐⭐⭐⭐ Worked on auto muffler *by C***G on July 31, 2026* Worked perfectly on several small holes and rusted seams on a car muffler. Most poor reviews are probably due to a lack of surface preparation. I used a wire wheel on a drill to prep surface to bare metal, cleaned with alcohol, mixed product thoroughly and had no problems. Several months later repair holding up fine. ## Frequently Bought Together - J-B Weld 8297 HighHeat 500 Degree Epoxy Putty Stick - 2 oz. , Grey - J-B Weld 37901 ExtremeHeat High Temperature Resistant Metallic Paste - 3 oz - J-B Weld 8267 SteelStik Steel Reinforced Epoxy Putty Stick - 2 oz. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/82260002-j-b-weld-highheat](https://www.desertcart.pt/products/82260002-j-b-weld-highheat) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-09-09*