---
product_id: 267257749
title: "WEST SYSTEM G/flex Epoxy (2-4oz)"
brand: "west system"
price: "$431600"
currency: COP
in_stock: true
reviews_count: 5
category: "West System"
url: https://www.desertcart.co/products/267257749-west-system-g-flex-epoxy-2-4oz
store_origin: CO
region: Colombia
---

# 75 min working time Waterproof bonding Flexible & tough WEST SYSTEM G/flex Epoxy (2-4oz)

**Brand:** west system
**Price:** $431600
**Availability:** ✅ In Stock

## Summary

> 🛠️ Bond like a pro, flex like a champ — waterproof strength that won’t quit!

## Quick Answers

- **What is this?** WEST SYSTEM G/flex Epoxy (2-4oz) by west system
- **How much does it cost?** $431600 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/267257749-west-system-g-flex-epoxy-2-4oz)

## 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

- • **Extended Working Time:** Generous 75-minute working window lets you perfect your application without rush.
- • **Trusted Legacy & Easy Use:** Backed by 50 years of marine expertise with simple 1:1 mixing and quick 3-hour cure.
- • **Shock & Vibration Resistant:** Absorbs expansion, contraction, and impact stresses for durable, long-lasting repairs.
- • **Unmatched Waterproof Strength:** Creates permanent, flexible bonds even on wet or underwater surfaces.
- • **Versatile Multi-Material Adhesion:** Bonds fiberglass, metals, plastics (including HDPE), ceramics, and challenging hardwoods effortlessly.

## Overview

WEST SYSTEM G/flex Epoxy is a tough, flexible, waterproof adhesive designed for permanent bonding of fiberglass, metals, plastics, and damp woods. With a 1:1 mix ratio and 75-minute working time, it cures fully in 1-2 days, offering superior adhesion even underwater. Ideal for boaters and professionals needing reliable, shock-absorbing repairs on challenging materials.

## Description

G/flex Epoxy Adhesive belongs in every boater's repair kit. Get a waterproof, flexible bond on plastic, fiberglass, aluminum, etc. The 650-8 kit gives you two 4 oz. bottles of the liquid epoxy. The 650-8 kit contains 4 oz. each of viscous liquid G/flex 650 resin and hardener. Mixing ratio is 1: 1. Mixed G/flex 650 is of a heavy "syrup" consistency. It will run off a vertical surface. 650 can be thickened with inert filling materials. G/flex is a product of West System, a division of Gouge on Brother's, The Gouge on brothers have been using epoxy resins in boat building and repair for some 50 years. It makes structural bonds that can absorb the stresses of expansion, contraction, shock and vibration. In addition to its superior bonding to many different materials and its ability to bond dissimilar materials, G/flex is much more flexible than other epoxies. This is an excellent property for boat building and repair. Polyethylene (HDPE) is a common kayak and canoe material. Its molecular structure resists gluing by most adhesives. G/flex solves the problem; it bonds well to polyethylene and ABS plastics. At 72 F pot life is 45 minutes. Working time is 75 minutes. It cures to a solid in three hours and cures to its full strength in one to two days. It cures faster in warmer temperatures and slower in colder ones. Clean up is simple. Wipe up spills with absorbent materials. Clean residue before it cures, with alcohol or acetone. G/flex adheres tenaciously to difficult-to-glue hardwoods, both tropical and domestic varieties. It has the ability to glue damp woods. It can be used on wet surfaces, even underwater when applied with specific techniques. G/flex does indeed belong in every boater's repair kit. The more you use it, the more uses you'll find for it - with your boating gear and other sporting and household items. It's easy to mix and use. The instructions that come with the kit are top notch.

Review: Resurfaced a Mad River 16’ Royalex Explorer. G/Flex mixed with Cabosil (filler), paste pigment, then applied with plastic squeegee. Worked pretty good, see how it endures over the next couple years
Review: The WEST SYSTEM G/flex Epoxy is excellent! It bonds strongly to a variety of surfaces and has great flexibility, making it perfect for repairs that need a durable hold. Easy to mix, easy to apply, and works exactly as advertised. Highly recommend for anyone needing a reliable epoxy.

## Features

- G/flex 650 is a toughened, versatile, liquid epoxy for permanent waterproof bonding of fiberglass, ceramics, metals, plastics, damp and difficult-to-bond woods.
- G/flex adheres tenaciously to difficult- to-glue hardwoods, both tropical and domestic varieties. This is important since many of the exotic and tropical species now being used to replace traditional woods present bonding challenges.
- G/flex has the ability to glue damp woods. It can be used on wet surfaces, even underwater when applied with specific techniques.
- Country of origin: United States

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002IZFPQE |
| Best Sellers Rank | #44,906 in Sporting Goods ( See Top 100 in Sporting Goods ) #78 in Exercise Equipment Mats #105 in Epoxy Adhesives |
| Department | Automotive |
| Item model number | NRS G/flex Epoxy (2- 4oz) |
| Manufacturer | WEST SYSTEM |
| Product Dimensions | 8.89 x 19.69 x 4.95 cm; 323.18 g |

## Product Details

- **Brand:** West System
- **Item form:** Liquid
- **Material:** Epoxy
- **Specific uses for product:** Repair

## Images

![WEST SYSTEM G/flex Epoxy (2-4oz) - Image 1](https://m.media-amazon.com/images/I/715RKL9qezL.jpg)
![WEST SYSTEM G/flex Epoxy (2-4oz) - Image 2](https://m.media-amazon.com/images/I/71LB8Xm3RrL.jpg)
![WEST SYSTEM G/flex Epoxy (2-4oz) - Image 3](https://m.media-amazon.com/images/I/61jLT0H419L.jpg)
![WEST SYSTEM G/flex Epoxy (2-4oz) - Image 4](https://m.media-amazon.com/images/I/71Rg7erA5wL.jpg)

## Questions & Answers

**Q: What is the shelf life of this epoxy?**
A: Detailed information can be discovered by contacting West Systems technical staff at 866-937-8797 or via e:mail at tech-support@westsystem.com

**Q: How much does this 8 oz cover?  Approximately howmany rivets would this cover?**
A: This is a highly subjective question with a lot of variables. If used somewhat conservatively it will easil cover 100 + Rivets.

**Q: Is it somewhat rubbery or pretty firm after it cures?  Could anyone please describe it?**
A: it is not rubbery, it hardens to a very firm coat; how hard is dependent on your mix. it is flexible and holds together; however, less hardener the more flex with coverage. i have used it to gack bows, and it works well.

**Q: is this an 8 oz bottle of the resin and an 8 oz bottle of the hardener?**
A: It's 4 + 4 mate. 8 oz in total

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***R on 10 December 2025*

Resurfaced a Mad River 16’ Royalex Explorer. G/Flex mixed with Cabosil (filler), paste pigment, then applied with plastic squeegee. Worked pretty good, see how it endures over the next couple years

### ⭐⭐⭐⭐⭐ Review
*by J***N on 3 February 2026*

The WEST SYSTEM G/flex Epoxy is excellent! It bonds strongly to a variety of surfaces and has great flexibility, making it perfect for repairs that need a durable hold. Easy to mix, easy to apply, and works exactly as advertised. Highly recommend for anyone needing a reliable epoxy.

### ⭐⭐⭐⭐⭐ Review
*by L***E on 11 February 2024*

Knife handles

## Frequently Bought Together

- WEST SYSTEM G/flex Epoxy (2- 4oz)
- Coolneon 1/8 inch Brass Rods 1/8 x 12 in, 10 Pcs for Knife Making Knife Handles Pins Stock Knife Scale Solid Round Brass Rod Dowel Rivet Gunsmithing Crafts Modeling Hobby
- G/Flex 655-1 1 oz syringe

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co/products/267257749-west-system-g-flex-epoxy-2-4oz](https://www.desertcart.co/products/267257749-west-system-g-flex-epoxy-2-4oz)

---

*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-02-20*