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🛠️ Bond Boldly, Repair Confidently — The Last Epoxy You’ll Ever Need!
G/Flex 655-1 is a high-performance, thickened 2-part epoxy adhesive designed for permanent, waterproof bonding across a wide range of materials including plastics, metals, ceramics, and damp woods. Its unique flexibility and toughness absorb stress from expansion, contraction, shock, and vibration, making it ideal for structural repairs. Delivered in a convenient 1 oz syringe with a 1:1 mix ratio, it offers 46 minutes of pot life and cures fully in 24 hours, ensuring reliable, long-lasting results for professionals and DIYers alike.





| ASIN | B08H8J4MCJ |
| Best Sellers Rank | #5,379 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #15 in Metal Filled Epoxies |
| Brand | West System |
| Brand Name | West System |
| Color | No Color |
| Compatible Material | Plastic |
| Container Type | Syringe |
| Customer Reviews | 4.8 out of 5 stars 244 Reviews |
| Full Cure Time | 24 hours |
| Item Form | Syringe |
| Item Package Quantity | 1 |
| Item Type Name | G/Flex 655-1 1 oz syringe |
| Manufacturer | Gougeon Brothers, Inc. |
| Material | Plastic |
| Material Type | Plastic |
| Model | 655-1 |
| Number of Pieces | 1 |
| Other Special Features of the Product | Waterproof |
| Part Number | 655-1 |
| Special Feature | Waterproof |
| Specific Uses For Product | Casting, Countertop, Flooring, Masonry, Repair |
| UPC | 850017278158 |
| Unit Count | 1 Count |
| Viscosity Level | High |
| Volume | 1 fluid ounces |
| Warranty Description | Warranty |
| Water Resistance Level | Waterproof |
C**S
excellent adhesive, many applications.
Bought for snowboard repair after researching. Works extremely well and repaired areas have held up. Have also been able to use to successfully repair many other things, mostly plastic. Very strong, waterproof adhesive. Will always have some in my toolbox. Just make sure to follow instructions and mix thoroughly.
D**R
One of the best epoxies money can buy.
Works very well on multiple materials. Just like the name suggests, it is slightly flexible. Which is much better than being brittle for multiple applications. Dries a light transparent yellow. Can decrease cure time by heating, but this will also decrease the durability of the cured adhesive.
J**D
An Awesome Epoxy that is strong, waterproof and flexible when cured!
The West Marine G-Flex Epoxy works well for the situations it is developed for. It is not a 5 minute set, which gives you time work with it. It is a strong epoxy that is waterproof and stays flexible once cured. Awesome for boat work, ski and snowboard repair etc. items that need waterproof and flexible qualities. It has worked well for the projects I purchased it for and I only use it for the repairs that require its properties. About 2x the price of regular epoxies.
P**R
Good for small jobs. Minimal mess
Worked really well for a small job. Keeps mess to a minimum.
N**E
Awesome!!!
This worked perfectly for my needs. Easy to extrude the amount you need and mix. It dried crystal clear. Be patient - you may need to hold things in place for a bit until it begins to set. Allow the full 24 hrs to set before touching. I attached 2 side handles to a large water tank to help me lift it when full. Those handles are attached so securely, they are never coming off. 100% satisfied.
R**5
Great Product
Great stuff mixes easy
A**R
Repaired split wood on my couch, and performed beautifully!
I was worried when it arrived and said it was for use on plastics, but decided to give it a go anyway to repair the split wood on my couch. I mixed it with the tiniest amount of Eye Candy coloring in a bowl and used a toothpick to carefully place it into the widened crack and knot. I clamped it all together and used painters tape to ensure nothing could drip through the bottom. Then I used a dry paper towel to very carefully wipe all the excess from the wood around the crack. It left a small amount of residue. After a couple of hours I took a paper towel and some rubbing alcohol and removed the residue that remained around the crack, being careful to work fast and not be overly aggressive so as not to remove the original finish on the wood. I let it cure for 24 hours and unclamped everything, and ventured a sit! It's been a week of regular use by 4 adults now and that foot long crack is nearly invisible and is holding perfectly. Tips: 1) This shrinks SLIGHTLY as it dries. You may want to leave the slightest mound on whatever you are filling if you don't want a valley. 2) Cover everything in painters tape (wood, clamps, etc) if you want to be able to pop them loose. Otherwise you may end up permanently attaching a new piece you didn't want. Amount: dispensed maybe 1/3 of the tube for this project. I had a minimal amount left over. The tubes were approximately the length of a hand.
G**N
Designed for Plastics.
Mixes easily, just push out what is needed and stir, has a cap if your not using all of it. I am using it for a transducer mount on transom with a piece of HDPE. I flamed the HDPE as suggested on epoxy label. This epoxy is slightly thicker and stickier that regular JB Weld. My only complaint is the clear resin, you cannot see much of a visual color change in the mix like JB Weld. Also I would have liked to had one of those mixing tubes that attaches to epoxy syringes, not sure why they don't supply one. My project is below water line , if I encounter any failures I will update review.
Trustpilot
2 weeks ago
2 weeks ago