---
product_id: 134985465
title: "WEST SYSTEM 205B Fast Hardener, 0.86 Quart"
brand: "west system"
price: "98 zł"
currency: PLN
in_stock: false
reviews_count: 5
url: https://www.desertcart.pl/products/134985465-west-system-205b-fast-hardener-0-86-quart
store_origin: PL
region: Poland
---

# Rapid 10-15 min pot life Optimized for cold weather use High strength & rigid cure WEST SYSTEM 205B Fast Hardener, 0.86 Quart

**Brand:** west system
**Price:** 98 zł
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Cure fast, build strong, stay ahead.

## Quick Answers

- **What is this?** WEST SYSTEM 205B Fast Hardener, 0.86 Quart by west system
- **How much does it cost?** 98 zł with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/134985465-west-system-205b-fast-hardener-0-86-quart)

## 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

- • **Precision Dosing:** Compatible with #301 mini pumps for exact mixing and zero waste.
- • **Lightning-Fast Cure:** Get projects done in record time with a 10-15 minute pot life at 70°F.
- • **Cold Weather Champion:** Formulated to perform reliably even in chilly conditions—no delays, no compromises.
- • **Trusted by Pros & Hobbyists:** A top-rated epoxy hardener with 4.8 stars from 200+ users, perfect for powersports and moisture-exposed gear.
- • **Unmatched Structural Strength:** Delivers a rigid, moisture-resistant solid when mixed 5:1 with #105 resin.

## Overview

WEST SYSTEM 205B Fast Hardener is a professional-grade epoxy hardener designed for rapid curing and high-strength bonding. When mixed 5:1 with #105 resin, it creates a rigid, moisture-resistant solid with a pot life of just 10-15 minutes at 70°F. Ideal for cold weather applications and precision dosing with #301 mini pumps, it’s trusted by both hobbyists and professionals for durable repairs and builds in powersports and moisture-exposed environments.

## Description

FAST HARDENER produces rapid cure. Mix with #105 resin 5:1 for rigid, high strength, rigid moisture resistant solid. Pot life of 10 to 15 minutes at 70°F. Use #301 mini pumps. Size: 0.86 Quart.

Review: West System Products are wonderful for both hobbyists and professionals. Convent package sizes make it easy to buy the right amount without waste. 205-B is great for cold weather or fast cure needs.
Review: Timely delivery of product is always desirable. West systems offers among the best performance for an adhesive and structural epoxy. Not to be confused with a slow cure or high depth of pour product.

## Features

- Causes severe skin burns and eye damage.
- Harmful if swallowed.
- Harmful in contact with skin.
- May cause an allergic skin reaction.
- May cause damage to organs through prolonged or repeated exposure.
- Suspected of causing genetic defects.
- Toxic to aquatic life with long lasting effects.
- WEST SYSTEM 205B, WSY205B

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002NY6SW |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 669,417 in DIY & Tools ( See Top 100 in DIY & Tools ) 239 in Metal Filled Epoxies |
| Colour | clear |
| Customer Reviews | 4.8 4.8 out of 5 stars (212) |
| Date First Available | 16 Aug. 2012 |
| Item Package Quantity | 1 |
| Item Weight | 998 g |
| Item model number | 205-B |
| Manufacturer | WEST SYSTEM |
| Material | Epoxy Resin |
| Number of Pieces | 1 |
| Part number | 205B |
| Product Dimensions | 6.1 x 11.56 x 18.54 cm; 997.9 g |
| Special Features | Fast Drying |
| Specific uses | Powersports Equipment, Moisture-Exposed Environments |

## Product Details

- **Brand:** West System
- **Item form:** Liquid
- **Material:** Epoxy Resin
- **Special feature:** Fast Drying
- **Specific uses for product:** Powersports Equipment, Moisture-Exposed Environments

## Images

![WEST SYSTEM 205B Fast Hardener, 0.86 Quart - Image 1](https://m.media-amazon.com/images/I/81Cx3Y5mmYL.jpg)
![WEST SYSTEM 205B Fast Hardener, 0.86 Quart - Image 2](https://m.media-amazon.com/images/I/81ZnL4CXwaL.jpg)

## Questions & Answers

**Q: how much hardner do i need for 4.35 gallons?**
A: The resin and hardener come as a 5 to 1 ratio. The resisnt exactly a gallon, the hardener in I think a 25 oz can goes with a “gallon” of resin so you would need to get five of these 25 oz cans of hardener and you’ll have 2/3 of a can of hardener left when you’ve used up your 4.35 gallons of resin.

**Q: I have used Envirotex Lite to coat tiles and it is crystal clear but SO long to cure. Question is if this is crystal clear? And how long to cure?**
A: You have to use 207 hardner and 207 resin. Go to West system site and read about clear finish.

**Q: Do these containers come full ? appeared to have channellock marks on lid channel and there was hardener on inner lid. Missing 2 inches of product.**
A: It doesn't matter. It was obviously opened by someone. Just return it and get another one or a refund.

**Q: My set of resin and hardener came today, but the hardener is brownish/redish in color when I pump it out.  Is that correct or should I return it?**
A: My hardener was slightly brownish when mixing with the resin, but after mixing it would clear up, and it would harden clear as well.  If it is very pronounced, you may have a problem, but if it is just a tint that goes away when you mix, that seems to be normal.  You may want to do a test on some scrap material to confirm.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***. on 24 November 2025*

West System Products are wonderful for both hobbyists and professionals. Convent package sizes make it easy to buy the right amount without waste. 205-B is great for cold weather or fast cure needs.

### ⭐⭐⭐⭐⭐ Review
*by J***. on 6 June 2024*

Timely delivery of product is always desirable. West systems offers among the best performance for an adhesive and structural epoxy. Not to be confused with a slow cure or high depth of pour product.

### ⭐⭐⭐⭐⭐ Review
*by D***T on 1 March 2025*

Outstanding Application every time!

## Frequently Bought Together

- West System 205-B Fast Hardener, Epoxy, Liquid, Epoxy Hardener, Clear
- Polycell Multi-Purpose Polyfilla Ready Mixed, 1 Kg

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**Shop now:** [https://www.desertcart.pl/products/134985465-west-system-205b-fast-hardener-0-86-quart](https://www.desertcart.pl/products/134985465-west-system-205b-fast-hardener-0-86-quart)

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-03-19*