West System 205 Fast Hardener

Fast Cure Epoxy Hardener for West System 105 Resin

West System 205 Fast Hardener (21204873) is a rapid-curing epoxy hardener designed for use with West System 105 Epoxy Resin in structural bonding and laminating applications.
Formulated to provide a fast cure at typical workshop temperatures, 205 Hardener reduces waiting time between application and handling, making it ideal for time-sensitive marine, construction and fabrication projects. When mixed with West System 105 Resin at the recommended ratio, it produces a high-strength, moisture-resistant epoxy system suitable for bonding timber, fibreglass, composites and selected metals. The fast cure profile allows quicker progression to sanding, coating or further assembly stages. Trusted across Australian boat building and woodworking industries, West System 205 Fast Hardener delivers reliable mechanical performance while improving workflow efficiency in demanding environments.

Features & Benefits

Key Features

• Fast cure epoxy hardener
• Designed for West System 105 Resin
• High-strength structural performance
• Moisture-resistant cured epoxy
• Suitable for bonding and laminating

Key Benefits

• Reduces cure time and project delays
• Allows quicker sanding and finishing
• Provides strong and durable bonds
• Improves productivity in workshop environments
• Ideal for cooler conditions requiring faster set
  
  

Technical Specs

• Product Type: Epoxy hardener – Part B
• System: West System 205
• Compatibility: West System 105 Resin
• Mix Ratio: As specified by manufacturer
• Product Code: 21204873

Key Applications

• Marine boat building and repairs
• Timber bonding and joinery
• Fibreglass laminating
• Composite fabrication
• Structural repair and assembly
  
  

West System 205 Fast Hardener (21204873) FAQs

Q1: What is West System 205 Fast Hardener (21204873) used for?
A: It is used with West System 105 Resin to create a fast-curing structural epoxy system.

Q2: Can this hardener be used on its own?
A: No, it must be mixed with West System 105 Resin to cure properly.

Q3: How does 205 Fast differ from slow hardeners?
A: It provides a shorter working and cure time, allowing faster handling and finishing.

Q4: Is this suitable for marine use?
A: Yes, it is widely used in boat building and marine repair applications.

Q5: Does it provide strong structural performance?
A: Yes, when mixed correctly it produces a high-strength, moisture-resistant epoxy bond.

Downloads

• Technical Data Sheet (TDS)
• Safety Data Sheet (SDS)