

⚓ Seal it like a pro — don’t let leaks sink your vibe!
J-B Weld 50172 MarineWeld Syringe is a high-viscosity, two-part adhesive designed for marine and watercraft repairs. It delivers a waterproof, UV-resistant, and chemically durable bond with a tensile strength of 2350 PSI. Packaged in a user-friendly syringe for precise 1:1 mixing, it fully cures in 1 hour, making it the go-to solution for professionals seeking fast, reliable fixes in demanding environments.














| ASIN | B00R2CDVIW |
| Best Sellers Rank | #2,278 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #37 in Hardware Adhesives & Sealers |
| Brand Name | J-B Weld |
| Color | 25 ml. |
| Compatible Material | Plastic |
| Container Type | Syringe |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,929) |
| Full Cure Time | 1 Hours |
| Global Trade Identification Number | 00043425501721 |
| Included Components | JBWeld 50172 |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Type Name | BONDING_ADHESIVES |
| Item Weight | 2.1 Ounces |
| Manufacturer | JBWeld |
| Material Type | Fiberglass |
| Model | 50172 |
| Other Special Features of the Product | UV Resistant, Waterproof |
| Specific Uses For Product | Marine, Watercraft Repair |
| Tensile Strength | 2350 Pounds Per Square Inch |
| UPC | 043425501721 043425700162 |
| Viscosity | High Viscosity |
| Volume | 25 Milliliters |
| Warranty Description | Manufacturer Warranty |
| Water Resistance Level | Waterproof |
S**N
Performance
So happy they came put with white marine grade. I use this on my Hurricane boat to patch minor holes and worked out perfect. I have always trusted JB Weld to do the job and it keeps performing.
A**R
Works amazing for fiberglass repair
Great for fiberglass repair on my hood that was splitting! Holds very Strong! Very straight foreword to apply.
T**.
Fixed a chip in my fiberglass tub
I used this to fill a chip I had in my white fiberglass tub. It worked FLAWLESSLY, and dried quickly to a very hard fill. Super pleased.
C**S
Good product, bur small containers
This product sets up well, but not as hard as other epoxies from this company. The packages do not contain a lot of product, but are suitable for smaller repairs, and the adhesion is good. I would recommend it with the caveats above.
G**T
Original product
Great original product. Works great on the little aluminum boat to patch holes and strengthen up a few spots
A**N
easy to use. saved money.
easy to use. Had 3 chips in my sink and this covered them easily. took about 12 hours to dry hard, but could use sink in 3 hours. now i just have to lightly sand. Was going to get a new bath vanity, and now don't have to!
R**N
Very strong
Very strong. Fixed a boat hatch strut bracket that the holes were wallowed out. Filled the holes and installed new screws strong fix. Also fixed a button snap hole in the boat deck.
C**W
Starts to cure in minutes
FYI...I think the packaging says "ready to sand in one hour" and they're not kidding. I set up my project, mixed the content inside the two syringes together, and started applying the epoxy working from one end of a crack to the other end. It started hardening on me before I could cover the entire crack. So if you need a little more time, I would buy the stuff that cures in 2 hours.
E**S
Muy buen pegamento flexible y a prueba de agua, seca muy rápido toca probar su durabilidad
H**S
I got two packets for an important project. When we opened one, one of the tubes was completely solid. Not to worry, I had an extra one, right? Wrong! That one was also in the same condition. So now we are delayed by a week at least until we get another suitable product, not to mention the financial losses .
T**U
As described. Great for wet areas.
I**S
The best glue/filler of its kind, this stuff cures rock solid, with decent work/cure time, and easy to use. Recommend you mix in small quantities, as it sets quickly and becomes lumpy in doing so, if you keep trying to mix it. Superb at its “job”, though, especially for water features (this was a repair to my mother-in-law’s broken water feature, results are perfect!).
C**.
Sehr sehr aber gutes Zeug. Da lohnt sich die Lieferung aus England. Gut ausdrückbar gut verrührbar wird nach 40 Minuten gummiartig so dass ich in mein offenes GFK Loch erst füllen und danach nach 40 Minuten mit einer Schraube versehen konnte es hält alles bombenfest. Auf dem Foto mit der Schraube war ein Versuch der Festigkeit.
Trustpilot
1 month ago
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