#205-B Fast Hardener
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WEST SYSTEM #205-B Fast Hardener: Precision Timing for Your Epoxy Projects
Elevate your boat building and repair projects with WEST SYSTEM #205-B Fast Hardener. Designed to work seamlessly with #105 Epoxy Resin, this hardener gives you the control you need over cure times, ensuring that your epoxy applications are perfectly timed for optimal results.
Why Choose WEST SYSTEM #205-B Fast Hardener?
Speed and Efficiency: When mixed with #105 Epoxy Resin at a 5:1 ratio, #205-B Fast Hardener offers a pot life of 9-12 minutes at 72°F and a solid cure in just 6-8 hours. It’s ideal for when you need a quick turnaround without compromising on strength. This hardener works well at temperatures as low as 40°F, making it versatile for various working conditions.
Customizable Cure Times: Depending on your project’s needs, you can also choose from #206 Slow Hardener and #209 Extra Slow Hardener. #206 Slow provides a 20-25 minute pot life and a cure time of 12-18 hours at 72°F, while #209 Extra Slow offers a 20-25 minute pot life with a cure time of 10-15 hours. Both are perfect for applications requiring a longer working time or higher temperatures.
Versatile Applications: These hardeners are perfect for a range of marine applications. Use them to wet out porous surfaces before bonding with thickened epoxy, laminate materials, or apply fabrics. They are also excellent for barrier coating, providing a durable moisture barrier with multiple coats of epoxy.
Clear Finishes: For projects requiring a clear, natural finish, #209 Extra Slow Hardener and #207 Special Clear Hardener are the go-to choices. They work well for clear fabric applications and coating wooden surfaces to create a transparent moisture barrier.
Perfect Proportions: Ensure accurate mixing with our recommended metering pumps. For group sizes "A", "B", and "C", use the 300 Mini-Pump Kit for precise 5:1 ratios. For larger sizes, the 306-23 Special Purpose Resin/Hardener pump (Model 128845) or 306-25 Special Purpose Resin/Hardener pump (Model 335703) are ideal for 3:1 or 5:1 ratios.
Key Features
- Fast Cure Time: 9-12 minute pot life and solid cure in 6-8 hours.
- Versatile Use: Ideal for various marine bonding and sealing applications.
- Flexible Temperature Range: Works well at temperatures as low as 40°F.
- Accurate Mixing: Pair with recommended metering pumps for precise proportions.
Upgrade your epoxy projects with WEST SYSTEM #205-B Fast Hardener—the trusted choice for boaters seeking reliable and efficient curing solutions.
Overview of Hardeners and Cure Times
| Hardener | Resin : Hardener Ratio | Pot Life @ 72°F | Cures to Solid | Min. Temp. |
|---|---|---|---|---|
| 205 Fast | 5 : 1 | 9-12 min. | 6-8 hr. | 40°F |
| 206 Slow | 5 : 1 | 20-25 min. | 10-15 hr. | 60°F |
| 209 Extra Slow | 3 : 1 | 40-50 min. | 20-24 hr. | 65°F |
| 207 Special Clear | 3 : 1 | 20-25 min. | 10-15 hr. | 60°F |
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