---
product_id: 292311881
title: "205 Fast Hardener.43 Pt .47 Lb"
brand: "west system"
price: "A$123"
currency: AUD
in_stock: true
url: https://www.desertcart.com.au/products/292311881-205-fast-hardener-43-pt-47-lb
store_origin: AU
region: Australia
---

# 9-12 min pot life Medium viscosity Cures at 40°F 205 Fast Hardener.43 Pt .47 Lb

**Brand:** west system
**Price:** A$123
**Availability:** ✅ In Stock

## Summary

> 🚀 Fast, Strong, and Ready to Bond!

## Quick Answers

- **What is this?** 205 Fast Hardener.43 Pt .47 Lb by west system
- **How much does it cost?** A$123 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/292311881-205-fast-hardener-43-pt-47-lb)

## 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

- • **Rapid Curing:** Achieves solid state in just 6-8 hours, perfect for quick turnarounds.
- • **Optimal Mixing Ratio:** Blend with 105 Epoxy Resin at a 5:1 ratio for maximum performance.
- • **High Strength Bonding:** Creates a rigid, moisture-resistant solid for durable results.
- • **Versatile Application:** Easily modified with fillers and pigments for any project.
- • **Temperature Resilience:** Cures effectively even in lower temperatures, ensuring year-round usability.

## Overview

West System 205 Fast Hardener is a medium-viscosity epoxy curing agent designed for versatile applications, including bonding and fairing. It cures at temperatures as low as 40°F and achieves maximum strength in 1 to 4 days, making it ideal for various projects. Pair it with West System 105 Epoxy Resin for optimal results.

## Description

205 Fast Hardener.43 Pt .47 Lb

## Features

- EASILY MODIFIED with WEST SYSTEM Fillers, Additives, and Pigments to suit the job at hand, whether coating, applying fiberglass, structural bonding, or fairing. Not intended for clear coating
- PAIR WITH WEST SYSTEM 105A Epoxy Resin. Blend with with WEST SYSTEM 105 Epoxy Resin at a 5parts resin to 1part hardener ratio
- 205 FAST HARDENER is a mediumviscosity epoxy curing agent. It is useful in a majority of bonding situations, and at lower temperatures. 205 Fast Hardener produces a rapid epoxy cure that develops phys
- CURES AT TEMPERATURES as low as 40°F (4°C). Will cure faster at warmer temperatures. Pot life is 9 to 12 Minutes. Cures to a solid state in 6 to 8 hours. Cures to maximum strength in 1 to 4 days. Mini
- MIX WITH WEST SYSTEM 105 Resin in a fivepart resin to onepart hardener ratio. The resulting cured epoxy is a rigid, highstrength, moistureresistant solid. The combination of 105 Resin/205 Fast Hardene

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002NY6T6 |
| Best Sellers Rank | #58,348 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #35 in Boat Painting Supplies |
| Brand | West System |
| Color | Clear |
| Customer Reviews | 4.6 4.6 out of 5 stars (244) |
| Date First Available | February 10, 2011 |
| Full Cure Time | 3 Days |
| Global Trade Identification Number | 00678358932108, 00811343010027 |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Volume | 206 Milliliters |
| Item Weight | 9.6 ounces |
| Item model number | 205 |
| Manufacturer | Gougeon Brothers, Inc. |
| Manufacturer Part Number | 205-A |
| Material | Epoxy Resin |
| Model | West System |
| Number of Pieces | 1 |
| Package Information | Bottle |
| Product Dimensions | 2.6 x 2.6 x 3.65 inches |
| Special Feature | Fast cure time, adaptability with various modifications |
| Special Features | Fast cure time, adaptability with various modifications |
| Specific Uses For Product | Bonding, Coating |
| UPC | 678358932108 811343010027 |
| Unit Count | 7.0 Fluid Ounces |
| Viscosity | Medium |
| Viscosity Level | Medium |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** West System
- **Specific uses for product:** Bonding, Coating
- **Material:** Epoxy Resin
- **Compatible material:** Fiberglass
- **Item form:** Liquid

## Images

![205 Fast Hardener.43 Pt .47 Lb - Image 1](https://m.media-amazon.com/images/I/71QqBGsNhQL.jpg)

## 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.

## 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 Australia*
*Store origin: AU*
*Last updated: 2026-02-15*