---
product_id: 6638282
title: "G/flex 650 Epoxy Resin and Hardener Kit | 16 oz. Bottles, Toughened Marine Epoxy for Fiberglass, Structural Repairs, and All Weather Use | Made in the USA"
brand: "west system"
price: "KD 44.50"
currency: KWD
in_stock: true
reviews_count: 8
category: "West System"
url: https://www.desertcart.com.kw/products/6638282-g-flex-650-epoxy-resin-and-hardener-kit-16-oz
store_origin: KW
region: Kuwait
---

# waterproof & marine-grade works on damp & cold surfaces 7-hour full cure time G/flex 650 Epoxy Resin and Hardener Kit | 16 oz. Bottles, Toughened Marine Epoxy for Fiberglass, Structural Repairs, and All Weather Use | Made in the USA

**Brand:** west system
**Price:** KD 44.50
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal the deal with the epoxy pros trust—stronger, tougher, and ready for anything!

## Quick Answers

- **What is this?** G/flex 650 Epoxy Resin and Hardener Kit | 16 oz. Bottles, Toughened Marine Epoxy for Fiberglass, Structural Repairs, and All Weather Use | Made in the USA by west system
- **How much does it cost?** KD 44.50 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/6638282-g-flex-650-epoxy-resin-and-hardener-kit-16-oz)

## Best For

- west system enthusiasts

## Why This Product

- Trusted west system brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Flexible Toughness:** Engineered to flex under stress, resisting cracks and bond failure where others break.
- • **All-Weather Reliability:** Adheres flawlessly to wet, cold, or challenging surfaces—marine-ready anytime.
- • **Precision USA-Made Formula:** Two-part system ensures consistent mixing and professional-grade results every time.
- • **Unmatched Structural Strength:** Delivers permanent, toughened bonds that outperform premium competitors.
- • **Versatile Material Compatibility:** Bonds fiberglass, metals, ceramics, plastics, and hard-to-glue woods with ease.

## Overview

WEST SYSTEM® G/flex 650 is a premium, toughened marine epoxy resin and hardener kit designed for durable, waterproof structural repairs. It bonds a wide range of materials including fiberglass, metals, and plastics, even on damp or cold surfaces. With a flexible formulation that resists cracking and a 7-hour full cure time, this USA-made two-part epoxy delivers reliable, long-lasting performance in demanding environments.

## Description

WEST SYSTEM® G/flex 650 Epoxy Resin and Hardener Kit | 16 oz. Bottles, Toughened Marine Epoxy for Fiberglass, Structural Repairs, and All Weather Use | Made in the USA: General Purpose Glues: desertcart.com: Industrial & Scientific

Review: Best adhesive I've ever used - This is the strongest adhesive I've found for most substrates (the exception being low surface energy plastics). With good surface preparation, I've had excellent results on aluminum, steel, stainless steel, carbon fiber, fiberglass, wood, and many plastics. I did some tests against 3M DP420, the gold standard of toughened epoxies, and this had better shear strength (despite being much less expensive). I've tried acrylic, urethane, and CA adhesives; none matched the strength and toughness of this. This is NOT a quick-dry epoxy. It doesn't even start to harden for a few hours. I always let it dry overnight before using what I've glued with it. It seems to reach almost full strength about as fast as 30-minute epoxies, but it has a much longer working time. Ideally, plan a day ahead. It's a little harder to use than dual-syringe epoxies, of course. If measuring volume is too difficult (say you only need a small amount), you can always weigh the components. The resin is much heavier (about 1.2X), so be sure to account for that. For example, tare your scale, add 2g of hardener, and then add 2.4g of resin.
Review: Much better than traditional epoxy fiberglass, ford jet ski repair - This product is amazing. It is much more flexible, then traditional epoxy does require a bit more effort to sand but. Gives a great nice finish and sticks to anything. Would definitely buy again

## Features

- Toughened structural epoxy for permanent bonds – WEST SYSTEM G/flex 650 epoxy is a toughened, liquid structural epoxy resin designed for long-lasting, waterproof bonding in demanding repair and fabrication applications.
- Reliable adhesion to difficult materials – This G/flex epoxy bonds fiberglass, metals, ceramics, plastics, and hard-to-bond woods that often challenge conventional epoxy resin systems.
- Performs in marine and cold conditions – WEST SYSTEM G/flex 650 epoxy adheres to damp wood and wet surfaces and can be applied in any temperature, making it well suited for marine epoxy repairs and cold weather epoxy use.
- Flexible formulation resists bond failure – Unlike rigid epoxy resin kits, G/flex epoxy allows controlled flex to improve peel strength and impact resistance where movement or vibration is expected.
- Complete epoxy and hardener system – Made in the USA and supplied as a two-part WEST SYSTEM epoxy resin and hardener, G/flex 650 delivers predictable mixing and performance backed by WEST SYSTEM technical expertise.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002PKLO80 |
| Best Sellers Rank | #25,136 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #42 in Metal Filled Epoxies |
| Brand | West System |
| Color | Pale yellow |
| Customer Reviews | 4.8 4.8 out of 5 stars (240) |
| Date First Available | July 24, 2009 |
| Full Cure Time | 7 Hours |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Volume | 16 Fluid Ounces |
| Item Weight | 2.24 pounds |
| Item model number | 650-32 |
| Manufacturer | Gougeon Brothers, Inc. |
| Manufacturer Part Number | 650-32 |
| Material | Epoxy Resin |
| Model | West System |
| Number of Pieces | 2 |
| Package Information | Can |
| Product Dimensions | 2 x 2 x 2 inches |
| Special Feature | Highly Versatile, Strong Underwater Adhesion, Extreme Bonding Capabilities |
| Special Features | Highly Versatile, Strong Underwater Adhesion, Extreme Bonding Capabilities |
| Specific Uses For Product | Repair, Woodworking, Carpentry |
| UPC | 811343012038 |
| Unit Count | 1.0 Count |
| Viscosity | [LOW_TO_MEDIUM] |
| Viscosity Level | Low to Medium |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** West System
- **Item Form:** Liquid
- **Material:** Epoxy Resin
- **Special Feature:** Highly Versatile, Strong Underwater Adhesion, Extreme Bonding Capabilities
- **Specific Uses For Product:** Repair, Woodworking, Carpentry

## Images

![G/flex 650 Epoxy Resin and Hardener Kit | 16 oz. Bottles, Toughened Marine Epoxy for Fiberglass, Structural Repairs, and All Weather Use | Made in the USA - Image 1](https://m.media-amazon.com/images/I/81PnSpWX6UL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best adhesive I've ever used
*by R***. on March 5, 2024*

This is the strongest adhesive I've found for most substrates (the exception being low surface energy plastics). With good surface preparation, I've had excellent results on aluminum, steel, stainless steel, carbon fiber, fiberglass, wood, and many plastics. I did some tests against 3M DP420, the gold standard of toughened epoxies, and this had better shear strength (despite being much less expensive). I've tried acrylic, urethane, and CA adhesives; none matched the strength and toughness of this. This is NOT a quick-dry epoxy. It doesn't even start to harden for a few hours. I always let it dry overnight before using what I've glued with it. It seems to reach almost full strength about as fast as 30-minute epoxies, but it has a much longer working time. Ideally, plan a day ahead. It's a little harder to use than dual-syringe epoxies, of course. If measuring volume is too difficult (say you only need a small amount), you can always weigh the components. The resin is much heavier (about 1.2X), so be sure to account for that. For example, tare your scale, add 2g of hardener, and then add 2.4g of resin.

### ⭐⭐⭐⭐⭐ Much better than traditional epoxy fiberglass, ford jet ski repair
*by A***R on July 12, 2025*

This product is amazing. It is much more flexible, then traditional epoxy does require a bit more effort to sand but. Gives a great nice finish and sticks to anything. Would definitely buy again

### ⭐⭐⭐⭐⭐ The Best. Totally worth the money.
*by N***Y on June 23, 2024*

It's the easiest two part high tensile epoxy I've used. Mixes to a honey-like texture and flow. Gives you a solid 35 minute work time, probably longer in cooler climates. I used it to install two 40" (4" x 2") kevlar felt canoe skid plates. Used about 100 grams (50 gr of each) per skid. Lots more product still in the bottles. Wets the fabric thoroughly, smoothes out nicely. Cured in 60 minutes in the local 108 degree heat. Sands easily. Do yourself a favor.

## Frequently Bought Together

- G/FLEX EPOXY QT KIT
- The Felt Store Kevlar® Felt Skid Plates for Canoes - Excellent Cut & Abrasion Resistance, Protect Bow & Stern, Kayak Accessory for Canoe & Boat Protection, 2 Pieces
- Kevlar Felt - 1 Yard - 36 Inches by 40 Inches - Used for Canoe Kayak to Protect Boat Bottoms from Rocks, Oysters, Sand, and virtually Any Object That Would Normally Puncture The Bottom - 3.5 Ounce

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---

*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-03-23*