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🔧 Fix it fast, fix it forever — the pro’s secret weapon!
J-B Weld Simply 50139 PlasticBonder is a high-strength, quick-setting urethane adhesive designed for permanent repairs on plastics, composites, metals, and concrete. With a tensile strength of 3770 PSI and a 15-minute set time, it offers water, chemical, and heat resistance. The twin syringe dispenser ensures precise mixing and multiple uses without waste, making it an essential tool for professionals and DIYers seeking reliable, durable fixes.








| ASIN | B01IBOK7FE |
| Best Sellers Rank | 499 in DIY & Tools ( See Top 100 in DIY & Tools ) 119 in Adhesives & Sealers |
| Brand | J-B Weld |
| Colour | Black |
| Compatible Material | Carbon, Concrete, Fibreglass, Metal, Plastic |
| Container Type | Syringe |
| Country Of Origin | USA |
| Customer Reviews | 4.5 out of 5 stars 17,005 Reviews |
| Full Cure Time | 3E+1 Hours |
| Global Trade Identification Number | 00043425501394, 00434255013940 |
| Included Components | Epoxy Syringe 25 ML.^Stir Stick |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Type Name | Plastic Bonder Syringe Dispensed |
| Item Volume | 25 Millilitres |
| Item Weight | 0.1 Pounds |
| Item form | Liquid |
| Manufacturer | JB WELD LTD |
| Manufacturer Part Number | 50139 |
| Material | Plastic |
| Model Number | 50139 |
| Number of Pieces | 1 |
| Other Special Features of the Product | Heat Resistant, water resistant |
| Smart Home Compatibility | Not Smart Home Compatible |
| Special feature | Heat Resistant, water resistant |
| Specific Uses For Product | Tile Repair, Woodworking, Carpentry, Repair, Flooring, Masonry, Countertop, Wall Repair |
| Specific uses for product | Tile Repair, Woodworking, Carpentry, Repair, Flooring, Masonry, Countertop, Wall Repair |
| Tensile Strength | 3770 Pounds Per Square Inch |
| UPC | 043425501394 |
| Unit Count | 25.0 millilitre |
| Viscosity Level | Medium to High |
| Water Resistance Level | Water Resistant |
S**N
Great Quality a must have for the tool box
This is great stuff, the tubes are great no mess just twist off the cap and squirt it out, due to the tube design the glue is not going off between uses, sets quickly in approx. 30mins but fully cured in 24hours, then its rock hard and does not budge, great for me for all the little fixes, handy to have a tube ready to go, I also use the JB marine weld. fully recommend.
A**S
Amazing stuff!!
It just works. Despite some reviews stating that it is "too wet" and wrongly criticising the incredibly simple cap, this stuff is easy to mix, easy to use (when applying a little common sense) and absolutely tough as old boots. Twist and pull off the cap to open the twin tube dispenser and give the tubes a few taps to make sure there's no air trapped in either, push the plunger to squeeze out the 2 components, ensuring that they come out in equal amounts, mix well and, unless you need a really liquid material, leave for around 5 minutes, possibly even a little longer if you're using it on a vertical surface, so that it thickens up a bit. Do make sure to replace the cap the right way round, though - quite easy to do, since the component liquids are black and white. Once applied, it sets in 20 to 30 minutes (rarely the 15 minutes stated on the packaging), so you will have time to shape and smooth it as it starts to cure and might need to hold, clamp or tape a joint in place for a while. Other than that, once it has fully cured (I ended up leaving it for 24 hours, just to make sure, as it was still soft enough to indent with a fingernail, even after a couple of hours) it is both sandable and any overspill can be cut off or shaped with a sharp blade. I can only guess that those who have said it "didn't set" hadn't taken care to make sure there were equal amounts of the two components before mixing, as it is much like any 2 pack type adhesive or filler - too little hardener/activator means the product won't cure and harden. Honestly, when mixed and applied correctly, this product is so good that I have absolutely no issues with it and have ordered more for various other plastic repairs I need to do! Given how good it is, I think it's pretty good value, too.
K**L
Brilliant
Absolutely brilliant gear. Took a bit longer to set than advertised but once set it’s absolutely solid, used it to fix a handlebar switch that had come apart saved me buying another at a lot more money
P**L
An absolute lifesaver for fixing snapped plastic parts.
Sets incredibly hard in about 15 minutes, allowing you to fill structural gaps and sand it down flush. I used it to fix a vacuum cleaner hose and worked brilliantly. Thought of many more uses for it so can't fault it.
A**V
Fantastic Plastic Bonder - Ideal For VW Internal Door Card / Trim Repairs
I used this to repair one area of an internal door trim card of a VW Golf, where the door mounting clips hold the trim card to the metal part of the door. I was unlucky in breaking one location on the trim card when pulling the it off the door to gain access inside. The round cheaper mounting clips will sometimes break and will need replacing, but to replace the entire door trim card is very very expensive! This plastic bonder glued the broken ABS plastic piece back to the trim card and cured rock solid and saved me a fortune. I gave it a few hours to cure to make sure it will be strong before re-assembling the door trim card. Mix it throughly and clean surfaces, apply liberally - high recommended.
N**E
Simple to use
Great product-
E**9
Perfect product just poor syringe
Brilliant for what i required. Only issue was i lost 3/4 of it as the the plunger was stuck, then gave way and launched 3/4 of it out of the tube. Had to order a second one to complete the job i was doing
J**N
Strong, versatile, controllable. A must if you're 3D printing parts for assembly.
A really good plastic glue. A must if you're 3D printing and assembling parts. Very controllable if you're careful with how you push the syringe down - you can push out and mix small quantities and make your purchase last a good while. It's black and it sets black, but then I expect a lot of people are 3D printing with black filament where it blends in nicely. Despite the claims, you do get a stronger bond if you clamp for 24 hours. I've found this to be necessary when gluing metal to plastic, but for plastic to plastic applications then the manufacturer's recommended glue-setting times still hold true. Even better if your parts slide or click together in some way, so you can just add a dab of this glue and carry on - job done. For the price, the use you can get out of this glue, and its inherent strength, it's got to be 5 stars. I would like to try the Sealey structural MMA glue just for comparison purposes, but for most jobs, this will more than do.
J**E
Viene de Inglaterra
15 euros de contra Ren bolso aparte del producto
J**.
Super resistente!
Es un gran producto, nunca había usado un pegamento epóxico, y para ser la primera vez ha resultado muy bien. Logré pegar una pieza rota de mi laptop. Esta pieza forma parte del soporte de la bisagra izquierda, al inicio creí que no soportaría el movimiento constante, pero seguí las recomendaciones y tips de otros usuarios, lijar un poco la superficie (utilicé un pedazo de lija fina pegada a un picadiente debido a que el espacio era bastante reducido), limpiar (usé un cotonete mojado con alcohol isopropilico), luego apliqué el pegamento y dejé secar por alrededor de unos 4-5 días sin aplicar movimientos y el resultado fue bastante satisfactorio, el pegamento seca en color negro un poco esmalte, pero en mi caso no se nota tanto porque el chasis de la laptop es negra. En fin, funciona muy bien y es muy resistente, lo recomiendo mucho, te va a funcionar si sigues las instrucciones.
F**Y
Great “plastic maker”.
Bought it to repair the windshield pillar on my car. After mixing the product it takes around 20 to 30 minutes to start becoming harder. After an hour it hardens and it has a little rubbery texture. I sanded it and painted it afterwards, great result and easy to use.
P**R
Typical J-B product
Product works as described
P**Y
Real good stick
Works on my plastic real well
Trustpilot
1 month ago
1 week ago