---
product_id: 1960251
title: "West System 205-A Fast Epoxy Hardener, 7oz | Fast Cure, Cooler Climates"
brand: "west system"
price: "R$633"
currency: BRL
in_stock: true
reviews_count: 12
category: "West System"
url: https://www.desertcart.com.br/products/1960251-west-system-205-a-fast-epoxy-hardener-7oz-fast-cure
store_origin: BR
region: Brazil
---

# Fast 6-8 hr cure Works down to 40°F Bonds wood, fiberglass, metal West System 205-A Fast Epoxy Hardener, 7oz | Fast Cure, Cooler Climates

**Brand:** west system
**Price:** R$633
**Availability:** ✅ In Stock

## Summary

> ⏳ Cure fast, work smart—don’t let the clock or cold slow you down!

## Quick Answers

- **What is this?** West System 205-A Fast Epoxy Hardener, 7oz | Fast Cure, Cooler Climates by west system
- **How much does it cost?** R$633 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/1960251-west-system-205-a-fast-epoxy-hardener-7oz-fast-cure)

## 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

- • **Cold Climate Champion:** Formulated to cure reliably even at chilly 40°F, so your work never stalls.
- • **Precision Mixing Ratio:** Optimized 5:1 mix with 105 Resin ensures consistent, high-strength results every time.
- • **Extended Working Window:** Enjoy up to 70 minutes of thin-film working time for meticulous application without rush.
- • **Rapid Cure, No Downtime:** Get solid strength in as little as 6 hours—perfect for fast-paced projects.
- • **Versatile Bonding Power:** Seamlessly bonds wood, fiberglass, metals, and composites for marine or workshop use.

## Overview

West System 205-A Fast Epoxy Hardener is a premium, fast-curing hardener designed for use with 105 Epoxy Resin. It delivers high-strength, moisture-resistant bonds and coatings with a quick 6-8 hour cure time, even in temperatures as low as 40°F. Ideal for bonding wood, fiberglass, metals, and composites, it offers a precise 5:1 mix ratio and a generous working time, making it the go-to choice for professionals tackling projects in cooler climates or tight schedules.

## Description

Buy West System 205-A Fast Epoxy Hardener, 7oz | Fast Cure, Cooler Climates | Cure fast and get back to work even in cooler conditions with this reliable, fast-curing epoxy hardener.: Painting Supplies - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Fast and convenient - This was my first time using West System epoxy. I bought this along with the kit with the 204A hardener. The 205 hardener worked great with plenty of working time for some butcher block waterfall counter tops I was assembling. Thick enough to address some minor gaping issues yet thin enough to squeeze out properly for a great wood joint. I've use the hardware store epoxies or small bottle epoxies for many years and finally bit the bullet for West System. More expensive upfront but much cheaper overall. It is so much more convenient. The pumps are quick and so much more accurate for ensuring a proper cure. I highly recommend this product.
Review: Works as advertised - West system products worked very well. Easy to mix and apply with use of measuring hand pump, and syringe. Used to harden soft spots on RV floor. Make sure your holes are NOT drilled completely through the floor, or product will just run through. This product has a thin viscosity in order to inject where needed. Takes time to harden. Starts to harden within about 10-15 minutes. Oder is minimal which was a great surprise. Still used in well ventilated area.

## Features

- Fast-curing hardener for WEST SYSTEM Epoxy – WEST SYSTEM 205 Fast Hardener is formulated for general coating and bonding applications at lower temperatures and for projects that need a rapid cure at room temperature.
- Designed to mix with 105 Epoxy Resin – This hardener is used with WEST SYSTEM 105 Epoxy Resin at a 5:1 mix ratio to create a high-strength, moisture-resistant solid with excellent bonding and barrier coating properties.
- Bonds fiberglass, wood, and many metals – The cured 105/205 epoxy system wets out and bonds to wood fiber, fiberglass, reinforcing fabrics, foam, other composite materials, and a variety of metals for marine repair and fabrication work.
- Fast working and cure times – At 72°F, the mixed epoxy has a pot life of 9 to 12 minutes, a thin-film working time of 60 to 70 minutes, and cures to a solid state in 6 to 8 hours.
- Low-temperature performance with key limitations – 205 Fast Hardener can cure at temperatures as low as 40°F and can be thickened with WEST SYSTEM fillers, but is not intended for clear coating and standard epoxy safety precautions still apply.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002NY6T6 |
| Best Sellers Rank | #102,581 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #89 in Boat Painting Supplies |
| Brand | West System |
| Brand Name | West System |
| Color | Clear |
| Compatible Material | Fiberglass |
| Container Type | Bottle |
| Customer Reviews | 4.7 out of 5 stars 250 Reviews |
| Full Cure Time | 3 days |
| Global Trade Identification Number | 00678358932108, 00811343010027 |
| Included Components | West System 205-A Fast Hardener |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Type Name | West System 205-A Fast Hardener |
| Item Weight | 9.6 ounces |
| Manufacturer | Gougeon Brothers, Inc. |
| Material | Resin |
| Material Type | Resin |
| Model | 205 |
| Number of Pieces | 1 |
| Other Special Features of the Product | Fast cure time, adaptability with various modifications |
| Part Number | 205-A |
| Special Feature | Fast cure time, adaptability with various modifications |
| Specific Uses For Product | Bonding, Coating |
| UPC | 678358932108 811343010027 |
| Unit Count | 7 Fluid Ounces |
| Viscosity Level | Medium |
| Volume | 206 ml |
| Warranty Description | LIMITED WARRANTY |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** West System
- **Item Form:** Liquid
- **Material:** Epoxy Resin
- **Special Feature:** Fast cure time, adaptability with various modifications
- **Specific Uses For Product:** Bonding, Coating

## Images

![West System 205-A Fast Epoxy Hardener, 7oz | Fast Cure, Cooler Climates - Image 1](https://m.media-amazon.com/images/I/71QqBGsNhQL.jpg)
![West System 205-A Fast Epoxy Hardener, 7oz | Fast Cure, Cooler Climates - Image 2](https://m.media-amazon.com/images/I/81ZnL4CXwaL.jpg)

## Available Options

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

## Questions & Answers

**Q: The description of this item says .43 Pints which is 7 ounces.  However, the picture of the container says 27.5 ounces.  Which is it?**
A: The WEST Systems products are sold in several sizes. 7 oz round cans, 32 oz rectangular cans as shown here, and large rectangular cans of 126 oz.   Try to confirm the size you are buying.

**Q: Shelf life of 205 hardener? My cured epoxy (105+205) is soft, gooey, even when measured exactly with a syringe.**
A: I believe 105 resin takes a higher proportion of hardener than 205 resin. Check the directions.

**Q: How much faster than the "slow" hardener does the "fast" one cure?**
A: On the manufacturer's website states cure time is 6 to 8 hours. The pot life at 72 degrees Celsius has 6 to 12 minutes to work with.

**Q: Will the pumps work on the smaller 7 fl oz cans ?**
A: I believe that if you purchase the set of 3 pumps, the smallest will fit the smallest container which is, I think, a pint. If you don't routinely use something like an eighth cup or more, you might want to consider buying some syringes from a farm supply store (a 60ml syringe for the resin and a 12 ml for the hardener). I recommend these sixes because the epoxy is mixed at a 5:1 ratio of resin to hardener and syringes of these sizes mix one major increment of one to one major increment of the other. Contact me again if this isn't clear.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fast and convenient
*by S***. on April 28, 2021*

This was my first time using West System epoxy. I bought this along with the kit with the 204A hardener. The 205 hardener worked great with plenty of working time for some butcher block waterfall counter tops I was assembling. Thick enough to address some minor gaping issues yet thin enough to squeeze out properly for a great wood joint. I've use the hardware store epoxies or small bottle epoxies for many years and finally bit the bullet for West System. More expensive upfront but much cheaper overall. It is so much more convenient. The pumps are quick and so much more accurate for ensuring a proper cure. I highly recommend this product.

### ⭐⭐⭐⭐⭐ Works as advertised
*by M***E on December 3, 2023*

West system products worked very well. Easy to mix and apply with use of measuring hand pump, and syringe. Used to harden soft spots on RV floor. Make sure your holes are NOT drilled completely through the floor, or product will just run through. This product has a thin viscosity in order to inject where needed. Takes time to harden. Starts to harden within about 10-15 minutes. Oder is minimal which was a great surprise. Still used in well ventilated area.

### ⭐⭐⭐⭐⭐ West System 205-A Fast Hardener
*by R***. on February 17, 2024*

The West System is by far the best epoxy on the market to date! Easy to use! No mass. Simple to mix by pump! Use 205-A (Fast Hardener) or (206 Slow Hardener) I have been using it for 25 years and never had a problem with it! Great Epoxy!

## Frequently Bought Together

- West System 205-A Fast Hardener
- West System 105-A Epoxy Resin,Clear Pale Yellow
- WEST SYSTEM 300 Mini Pump Set

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-09-05*