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🖤 Bond Strong, Bond Smart — The Ultimate Plastic Repair Powerhouse
J-B Weld 50139 Plastic Bonder is a high-performance, two-part urethane adhesive and gap filler designed for fast, durable repairs on a wide range of surfaces including plastics, metals, and composites. Featuring a convenient syringe with a 1:1 mix ratio and resealable cap, it sets in 15 minutes and cures in 30 hours to a tough, black finish with 3770 PSI tensile strength. Water resistant and versatile, it’s the go-to solution for professional-grade DIY automotive and household repairs.








| ASIN | B01IBOK7FE |
| Best Sellers Rank | #460 in Automotive ( See Top 100 in Automotive ) #1 in Contact Adhesives #5 in Automotive Fillers, Adhesives & Sealants |
| Brand | J-B Weld |
| Brand Name | J-B Weld |
| Color | Black |
| Colour | Black |
| Compatible Material | Metal |
| Container Type | Syringe |
| Customer Reviews | 4.6 out of 5 stars 17,452 Reviews |
| Full Cure Time | 3E+1 Hours |
| Global Trade Identification Number | 00043425501394, 00434255013940 |
| Included Components | Epoxy Syringe 25 ML. |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Type Name | Plastic Bonder Body Panel Adhesive and Gap Filler Syringe - Dries Black - 25 ml |
| Item Weight | 0.06 Kilograms |
| Item form | Liquid |
| Manufacturer | JBWeld |
| Material | Epoxy Resin |
| Material Type | Epoxy Resin |
| Model | 50139 |
| Number of Pieces | 1 |
| Other Special Features of the Product | Water Resistant, Fast Drying |
| Part Number | 50139 |
| Special features | Water Resistant, Fast Drying |
| 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 | 45 Grams |
| Viscosity Level | High |
| Volume | 25 Milliliters |
| Water Resistance Level | Water Resistant |
J**.
Good quality
Good quality
H**Z
Perfect
The best. I used it for my EV car charger handle that was broken and it’s working perfectly
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.
M**A
SAME AS DESCRIBED
Good Quality
R**T
Good product
Works well
A**Y
Super strong
Super strong
A**R
Great bond
This is a great product. Bonds really strong.
G**K
Dried out and most likely expired.
This horrible glue had to be picked out because it had dried (white component of the glue). At first I thought it was a little, but I had to disassemble the syringe to get it. And in the end, having mixed it in the right proportion, after 48 hours the glue remained like rubber and did not glue securely, what I needed. I did not find the date of manufacture on the packaging, but this is clearly an expired product. This is a complete disrespect for the consumer, China even writes the date of manufacture and expiration date. Stay away from this brand and seller.
J**E
Viene de Inglaterra
15 euros de contra Ren bolso aparte del producto
C**O
Saved Me Hundreds on a Broken CR-V Mirror
I bought this after doing some online research when my son accidentally broke the passenger-side mirror on my new 2026 Honda CR-V. The electronics, glass, and adjustment functions were still working perfectly, but the rotation/base area of the mirror had become loose, and I really did not want to spend around $300–$400 replacing the complete mirror assembly for one damaged section. I tried other products first without success, so I decided to give the J-B Weld Plastic Bonder a shot. I was honestly impressed. After applying it to the damaged area and holding everything in the correct position, within roughly 7 minutes the mirror already felt solid with practically no movement. For this type of repair, the bond feels extremely strong. Application is pretty straightforward, especially with the dual syringe that dispenses both components together. My main recommendation is to protect the surrounding area with painter’s tape before applying it. If you squeeze the syringe too aggressively, more product can come out than expected, and this stuff is definitely something you don’t want spreading over painted or visible surfaces. For me, this turned what could have been a several-hundred-dollar repair into a very inexpensive DIY fix. The syringe is also resealable, so I can keep the remaining product for another repair. Pros: Strong bond, sets quickly, easy to mix and apply, works well on automotive plastic, inexpensive compared with replacing the whole part, and reusable. Minor caution: Control the syringe carefully because it can dispense more adhesive than you need. Overall, this was a very impressive repair product and absolutely worth trying before replacing an expensive plastic automotive component that is otherwise still functional.
A**R
Works better than other products
Great!!!
M**K
Werkt
Werkt perfect
X**N
“This Glue Has More Staying Power Than My 2026 Resolution to Eat Better”
The rubber molding clip at the frontSo my Tundra’s rubber molding clip was threatening to quit its job when the wind started blowing. Enter J-B Weld Plastic Bonder, the superhero of adhesives. Applied it like a pro (read: squeezed out way more than needed), waited for it to cure, and now that clip is holding on tighter than a toddler with a lollipop. The syringe design means no mess, no drama, just pure bonding magic. Be careful when removing the cap as my syringe was preloaded and the 2 parts came shooting out. My advice is to pull back a little on the syringe before removing the cap. I contemplated removing a star because of this... If your plastic parts are threatening to abandon ship, this is the glue that will save your day. 5 stars because apparently my Tundra’s rubber molding now has a stronger bond than most people’s commitment to their morning workout routine.
Trustpilot
2 months ago
2 months ago