50139 Plastic Bonder Body Panel Adhesive and Gap Filler Syringe - Black - 25 ml

I was replacing windshield wiper refills and one of the plastic covers cracked in a few pieces. Since it was just the cover part and the wiper still worked fine and i still have a bunch or blade refills i decided to try and fix the cracked cover. I bought this 2 part epoxy since its black in color and its outdoor use. It mixes up easy but it gets everywhere. I was wearing disposable gloves thankfully or my hands would have been covered. I was working with small broken pieces so just couldnt avoid not touching the epoxy. It sets up pretty fast. The mixed epoxy seems to start setting up right after mixing. It gets hot too. I only mixed a small amount each time to have longer to work with it. Seems to cure solid. Sticks to everything. I used a little too much and had trouble fitting the wiper back on the arm so had to sand some down. It sanded easily with a metal file. Hopefully it lasts along time and doesnt break down in the sun. I'll update if theres any issues with it. - Update: Found another use for this epoxy. Theres a small plastic bracket inside the bottom of my cars front bumper that was loose and rattling around. I finally got around to seeing what it was exactly. Looks like it had broken off, im guessing since the bottom of the bumper is so low to the ground I must have hit a curb. The bracket is normally held to the bumper cover with a rivet and since i dont own a rivet tool I figured i can install a nut and bolt instead. The problem is when the bracket is fit onto the inside if the bumper theres no way to reach around to put the nut on, probably why a rivet was used. I used this epoxy to install the nut on so it doesnt move. It ended up working great. I cleaned the plastic really well with rubbing alcohol then sanded it a little to roughen up the surface with a small metal file. I had to hold the nut with my finger while inserting the small bolt, mixed up a small amount of the epoxy then poured it all around the nut. Carefull not to get any epoxy on the bolt so I could unscrew it back out so I can then install it on the bumper. I let it cure for a few hours just to be sure. Was able to fix it for the cost of a nut and bolt. And I still have plenty of the epoxy left for other things.

This is absolutely the best adhesive you can get for plastic bonding. I can’t recommend it higher. I had a cracked telescope tripod leg plastic piece which needed to fixed. I actually tried to order the actual piece from the vendor, no cigar, then the entire leg with the piece, again no cigar - they wanted me to buy the entire tripod which would have cost hundreds of dollars. Someone told me about J-B Weld and said it would work 100 percent but of course, the doubter I am, I did not believe them. My telescope mount weights about 35 pounds evenly spread on 3 legs and this piece was on one leg. Took it off the tripod leg, glued it, and waited an hour longer than required by the directions - you know doubter that I am, and what can i say the adhesive/glue had hardened into something stronger than the plastic piece iteself. Just amazing stuff and again I highly highly recommend it. I am amazed at the strength of the material and what it does - go out and get some just to have around the house.

The J-B Weld 50139 Plastic Bonder Body Panel Adhesive and Gap Filler Syringe has become a staple in my garage for automotive and household repairs. Here’s why I’m giving it a 5-star review: 1. Incredible Bonding Strength: This adhesive is extremely strong and has proven to hold up well under pressure. I used it to repair a cracked plastic body panel on my car, and it created a bond that felt just as strong as the original plastic. Whether you’re fixing bumpers, body panels, or other plastic components, this adhesive will keep them firmly in place. 2. Easy to Apply: The 25ml syringe is a convenient and easy-to-use applicator. It’s precise, which means no mess or waste. The mixing ratio is simple, and once you combine the resin and hardener, it’s ready to go. The syringe applicator allows for targeted application, so I could apply it exactly where I needed it without spilling. 3. Quick Curing Time: I was pleasantly surprised by the fast curing time. It only takes about 15 minutes to set, and full strength is achieved in a few hours. It’s perfect for quick fixes that don’t require hours of waiting. I was able to complete my repair and get back to driving without much downtime. 4. Versatile and Multi-Purpose: Not only is this great for automotive repairs, but it’s also perfect for other projects around the house. I’ve used it for plastic, fiberglass, and even metal repairs, and it holds up incredibly well. The bond is weather-resistant, which is a huge plus for outdoor or exposed repairs. 5. Durable and Long-Lasting: Once it cures, the bond is strong and durable. I haven’t had any issues with the adhesive breaking down or losing its strength, even after exposure to heat, cold, and moisture. It’s holding up incredibly well on the body panel I fixed, and I’m confident it will last for the long term. 6. Works as a Gap Filler: Another standout feature is its ability to act as a gap filler. The product fills in gaps between parts, which helps create a smooth, even surface once it dries. This is great for automotive bodywork, where filling in small cracks or gaps is necessary for a seamless repair. Final Thoughts: The J-B Weld 50139 Plastic Bonder Body Panel Adhesive and Gap Filler Syringe is a game-changer when it comes to repairing plastic components. It’s strong, fast, and easy to use. I’ve used it for a number of projects and have always been impressed with the results. If you’re looking for a reliable adhesive for plastic repairs, this is the one you need. 💯 Highly recommend! 5 stars for sure!

I have used Plastic Bonder on many projects over many years. When it works it is wonderful, when it does not it is typically easy to clean up and remove from the item so you can try a different solution. Pros: • Works on most plastics, and most materials I have tried to attach plastic to. Cons: • Doesn't always come out of the syringe in equal parts. This usually is only an issue with newer syringes but tapping the syringe several times seems to help release any air pockets inside that cause the issue. • Plastic Bonder is not compatible with Polypropylene (PP) or Polyethylene (PE) and their support recommends using MMA500 for Polypropylene. I have used Plastic Bonder with Polypropylene and it works for some fixes depending on the requirements. It only hardens to what can best be described as a stiff bendiness that breaks or separates if there is too much flexing or pressure, but it does not harm the PP plastic and is easy to clean up and remove from PP if needed. • Little documentation on specific materials that Plastic Bonder or any other JB-Weld is compatible with. Though they do respond to questions sent through the contact form on their website (jbweld.com) within a day or so. Tips: • Wear gloves. Though not listed, it sticks to skin quite well and is difficult to remove if left on your fingers for any amount of time. Alcohol, or acetone can help if it has only been a few minutes. • Have paper towels ready before you start applying. If Plastic Bonder gets on anything accadently, you need to quickly wipe it off. • Protect your work surface. This stuff is almost magical in its ability to get on everything in the immediate area. • For small items I have found the following useful: > Use painters' tape to hold the item together while curing. The tape usually releases relatively easily after a few hours and helps keep everything in place. > Using tinfoil as a drying surface works well. After about an hour of curing I gently twist the item to prevent the tinfoil from permanently bonding to the item I am working on. After an hour of curing Plastic Bonder usually has firmed up and enough to tolerate gentle movement of the item, while still being soft enough to easily release from the tinfoil. > Toothpicks make good disposable applicators and cut up business cards are handy for shaping Plastic Bonder when applying to small items. Overall, I do recommend JB-Weld Plastic Bonder. I do wish it were offered in other packaging as the syringe works for medium sized repairs, but for larger repairs the syringe does not last very long, and for smaller repairs a lot of Plastic Bonder goes to waste as it is difficult to eject small quantities of Plastic Bonder in equal parts from the syringe.

Great plastic welder. One of my cars bumper bracket broke off, but this was strong enough to fix it. So absolutely great, and it's been a year of me using this product! Very strong, but when installing it's recommended to do it on a sunny day, and have a heat gun. It's get very strong! Obviously it smells weird, you're combining two chemicals, but over time it does fade. Outdoor proof too!

After repeatedly using duct tape to hold my front bumper in place... I guess I need to dive into that first... My vehicle is a little busted, okay? Coming up on 300,000 miles, cracked windshield, squeaky brakes, temperamental A/C, you get the idea. Oh, and it's a minivan. All those things considered, I'm not really too worried about how the vehicle looks, so duct tape was the tool of choice for said bumper. Finally decided to use this bond to, you know, do its job. And it worked like a charm. Easy to apply, not expensive, and easy to re-seal just in case, and it's holding perfectly after a full week. Everything else with my minivan is still busted, but at least no more duct tape!

It's been 11 months to the day since I ordered this product as an emergency attempt to reattach the antenna cover of my Hyundai Elantra after it was broken off. Despite less than optimal conditions (I don't have an insulated garage, so despite using a space heater, I could not get the ambient temperature to the recommended range on the packaging) the bond has held strong and has given me absolutely no problems, surviving the summer sun, the spring showers, and the winter freeze. It is an excellent product that I would use again in a heartbeat. I've even used it to reattach magnets that have broken off of led light-sticks. Just make sure to wear disposable gloves when using it. Trust me, getting it off skin is not an easy task.

The dispenser doesn't really discharge equal amount. What you have to do is squeeze out a line(or a pair of lines) then visually mix equal amount of the two parts. If the mixture is incorrect, overnight, it will stay a sticky mess!. If mixed correctly, after about an hour, it will slightly harden but remains tacky. After about a day it will it will harden to like a hard plastic! So, basically it's a little tricky to use!