West System 209 Extra Slow Hardener 330ml

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West System 209 Extra Slow Hardener 330ml. Designed for use with 105 Resin, ideal for hot climates, large laminations and extended working time marine applic...

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Returns Policy

Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

To complete your return, we require a receipt or proof of purchase.

Please do not send your purchase back to the manufacturer.

There are certain situations where only partial refunds are granted: (if applicable)

  • Any item not in its original condition, is damaged or missing parts for reasons not due to our error.
  • Any item that is returned more than 14 days after delivery

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West System 209 Extra Slow Hardener 330ml

West System 209 Extra Slow Hardener 330ml is a specialised epoxy curing agent formulated to provide maximum working time when used with West System 105 Epoxy Resin.

Designed for warm climate applications and large-scale laminating projects, 209 Extra Slow Hardener offers significantly extended open time compared to fast and standard slow hardeners. This allows precise positioning, improved fibre wet-out and better laminate consolidation before initial set. It is particularly suited to marine construction, timber bonding and composite fabrication where temperature and project size demand extended handling time.

When mixed at the recommended ratio with West System 105 Resin, it produces a strong, moisture-resistant and durable epoxy system with excellent structural performance. The 330ml size is ideal for small to medium jobs, repairs and controlled workshop applications.

Features & Benefits

Key Features

  • Extra slow cure epoxy hardener
  • 330ml container size
  • Designed for West System 105 Resin
  • Extended working and open time
  • Suitable for warm temperature conditions

Key Benefits

  • Provides maximum time for complex laminations
  • Reduces exotherm in larger mixes
  • Improves fibre wet-out and bond strength
  • Ideal for hot climates and large projects
  • Delivers durable, moisture-resistant structural bonds

Technical Specs

  • Product Type: Epoxy hardener – Part B
  • System: West System 209 Extra Slow
  • Size: 330ml
  • Compatibility: West System 105 Epoxy Resin
  • Mix Ratio: As specified by manufacturer

Key Applications

  • Large marine laminations
  • Boat building in warm climates
  • Composite structural fabrication
  • Timber bonding and joinery
  • Industrial repairs requiring extended open time

 

West System 209 Extra Slow Hardener 330ml FAQs

What is West System 209 Extra Slow Hardener (WS209ESH) used for?

It is used with West System 105 Resin to create an epoxy system with extended working time.

How does 209 Extra Slow differ from 206 Slow?

It provides even longer open time, making it ideal for hot climates and large laminations.

Can this hardener be used on its own?

No, it must be mixed with West System 105 Resin to cure properly.

Is this suitable for marine applications?

Yes, it is widely used in boat building and marine structural work.

Does it maintain structural strength?

Yes, when mixed correctly it produces a strong, moisture-resistant epoxy bond.

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