---
product_id: 458862882
title: "FAST HARDENER #205, .86 QUART by WEST SYSTEM"
brand: "west system"
price: "AR$1634519"
currency: ARS
in_stock: true
url: https://www.desertcart.com.ar/products/458862882-fast-hardener-205-86-quart-by-west-system
store_origin: AR
region: Argentina
---

# Fast Drying Waterproof Seal 0.86 Quart Precision FAST HARDENER #205, .86 QUART by WEST SYSTEM

**Brand:** west system
**Price:** AR$1634519
**Availability:** ✅ In Stock

## Summary

> ⚡ Harden fast, finish flawless – don’t let time slow your craft!

## Quick Answers

- **What is this?** FAST HARDENER #205, .86 QUART by WEST SYSTEM by west system
- **How much does it cost?** AR$1634519 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/458862882-fast-hardener-205-86-quart-by-west-system)

## 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 Volume:** Perfect 0.86 quart size for professional and DIY use 🧴
- • **Lightning-Fast Cure:** Get projects done quicker with rapid epoxy hardening ⚡
- • **Crystal Clear Finish:** Maintains clarity for a sleek, professional look every time
- • **Trusted Brand Quality:** WEST SYSTEM reliability ensures consistent, high-performance results
- • **Waterproof Confidence:** Seal and protect with a durable, water-resistant finish 💧

## Overview

WEST SYSTEM FAST HARDENER #205 is a fast-drying, clear epoxy resin hardener in a convenient 0.86 quart bottle. Designed for waterproof sealing and quick curing, it delivers professional-grade durability and clarity, ideal for builders and craftsmen who demand speed without compromising quality.

## Description



## Features

- Fast Drying

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | WEST SYSTEM |
| Material | Epoxy Resin |
| Item Form | Liquid |
| Special Feature | Fast Drying |
| Colour | clear |
| Item Package Quantity | 1 |
| Package Information | Bottle |
| Item Volume | 0.86 Quarts |
| Water Resistance Level | Waterproof |
| UPC | 811343010577 780333707172 799916783816 |
| Number of Pieces | 1 |
| Global Trade Identification Number | 00811343010577 |
| Model number | 205-B |
| Item Weight | 998 g |
| Product Dimensions | 6.1 x 11.56 x 18.54 cm; 997.9 g |
| Item model number | 205-B |
| Item Height | 7.3 Inches |
| Item Width | 4.55 Inches |
| Are batteries included? | No |

## Product Details

- **Brand:** WEST SYSTEM
- **Material:** Epoxy Resin
- **Item Form:** Liquid
- **Special Feature:** Fast Drying
- **Colour:** clear

## Images

![FAST HARDENER #205, .86 QUART by WEST SYSTEM - Image 1](https://m.media-amazon.com/images/I/81Cx3Y5mmYL.jpg)
![FAST HARDENER #205, .86 QUART by WEST SYSTEM - 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.

## 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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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-01-22*