---
product_id: 5397946
title: "205-B Fast Hardener"
brand: "west system"
price: "$257.98"
currency: USD
in_stock: true
reviews_count: 8
category: "West System"
url: https://www.desertcart.ec/products/5397946-205-b-fast-hardener
store_origin: EC
region: Ecuador
---

# High-strength rigid bond Fast 6-8 hr cure time Cures down to 40°F (4°C) 205-B Fast Hardener

**Brand:** west system
**Price:** $257.98
**Availability:** ✅ In Stock

## Summary

> ⚡ Cure Fast, Bond Strong, Beat the Clock!

## Quick Answers

- **What is this?** 205-B Fast Hardener by west system
- **How much does it cost?** $257.98 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/5397946-205-b-fast-hardener)

## 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 Weather Ready:** Works flawlessly even at chilly 40°F, so your projects never pause.
- • **Precision Mix Ratio:** Optimized 5:1 resin-to-hardener blend for consistent, reliable results.
- • **Rapid Room-Temp Cure:** Get solid strength in as little as 6 hours—no waiting around.
- • **Customizable Performance:** Easily modify with fillers and pigments to tailor every job perfectly.
- • **Moisture-Resistant Finish:** Waterproof epoxy that stands up to the elements and time.

## Overview

West System 205 Fast Hardener is a medium-viscosity epoxy curing agent designed for rapid, high-strength bonding and coating. When mixed with 105 Resin at a 5:1 ratio, it cures to a rigid, waterproof solid in 6-8 hours at room temperature and performs reliably down to 40°F. Ideal for professionals and hobbyists needing fast, durable results in diverse conditions.

## Description

Buy West System 205-B Fast Hardener: Painting Supplies - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: West System Products are Great! - 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: Worth the expense! - Outstanding Application every time!

## Features

- - 205 FAST HARDENER is a medium-viscosity 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 physical properties quickly at room temperature.
- - MIX WITH WEST SYSTEM 105 Resin in a five-part resin to one-part hardener ratio. The resulting cured epoxy is a rigid, high-strength, moisture-resistant solid. The combination of 105 Resin/205 Fast Hardener has excellent bonding and coating properties.
- - 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. Minimum recommended working temperature is 40°F (4°C).
- - PAIR WITH WEST SYSTEM 105-B Epoxy Resin. Blend with with WEST SYSTEM 105 Epoxy Resin at a 5-parts resin to 1-part hardener ratio.
- - 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002NY6SW |
| Best Sellers Rank | #54,108 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #32 in Boat Painting Supplies |
| Brand | West System |
| Color | Clear |
| Date First Available | October 1, 2001 |
| Department | Epoxy |
| Full Cure Time | 4 Days |
| Global Trade Identification Number | 00811343010577 |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Volume | 0.86 Quarts |
| Item Weight | 2.2 pounds |
| Item model number | 205-B |
| Manufacturer | WEST SYSTEM |
| Material | Epoxy |
| Number of Pieces | 1 |
| Package Information | Can |
| Product Dimensions | 2.4 x 4.55 x 7.3 inches |
| Special Feature | Waterproof |
| Specific Uses For Product | Tile Repair |
| UPC | 811343010577 780333707172 799916783816 |
| Unit Count | 1.0 Fluid Ounces |
| Viscosity | Medium |
| Viscosity Level | Medium |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** West System
- **Item Form:** Liquid
- **Material:** Epoxy
- **Special Feature:** Waterproof
- **Specific Uses For Product:** Tile Repair

## Images

![205-B Fast Hardener - Image 1](https://m.media-amazon.com/images/I/81Cx3Y5mmYL.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

### ⭐⭐⭐⭐⭐ West System Products are Great!
*by J***. on November 24, 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.

### ⭐⭐⭐⭐⭐ Worth the expense!
*by D***T on March 1, 2025*

Outstanding Application every time!

### ⭐⭐⭐⭐⭐ Delivery ahead of schedule
*by J***. on June 6, 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.

## 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 Ecuador*
*Store origin: EC*
*Last updated: 2026-02-02*