J-B Weld 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.

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!

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!

Despite it not being specified on the label, this stuff really does work with polypropylene plastic. Even compared to the two-step plastics glue from Loctite that is specifically for PP plastic, this one from JBWeld excels and provided a stronger bond. I tried various adhesives to attempt to glue together a broken piece off of an automotive plastic part (gluing PP plastic to itself), and this glue worked the best. Some of the others didn’t work at all, and some only worked weakly.The adhesion seems strong, though not as strong as the original plastic bond. I did pull it apart after I let it cure for a few days as a test, and I was able to separate it but I had to use much force. It’ll work for what I need it for, and I’m sure it’ll work for most applications except perhaps heavy structural bearing loads (again this is in regards to gluing PP plastic).