west system logo

WEST SYSTEM 209 Extra Slow Hardener

WEST SYSTEM 209 Extra Slow Hardener is used for general coating and bonding applications in extremely warm and/or humid conditions. It is also used when extended working time is desired at room temperature.

This hardener forms a clear, amber-coloured solid with good physical properties and moisture resistance for bonding and coating applications. It also provides approximately twice the working time of 206 Slow Hardener®.

Pot life at 25°C: 50 to 70 minutes
Pot life at 35°C: 20 to 30 minutes
Cure to solid state at 21°C: 20 to 24 hours
Cure to solid state at 35°C: 6 to 8 hours
Cure to maximum strength at 21°C: 5 to 9 days
Minimum recommended temperature: 18°C

Downloadable technical datasheet

WEST SYSTEM 105 Epoxy Resin with 209 Extra Slow Hardener

209 Extra Slow Hardener large crop209 Extra Slow Hardener small crop

 

 

Subscribe to our newsletter so we can share with you our unique knowledge and experience of working with epoxy.

 

 

New Downloads

Latest PRO-SET news - Autumn 2017

Epoxy cure times
Open time and cure time govern much of the activity of building and repairing with epoxy. Open time dictates the time available for mixing, application, smoothing, shaping, assembly and clamping. Cure time dictates how long you must wait before removing clamps, or before you can sand or go on to the next step in the project. Follow this link to find out more about epoxy cure times.

Buy
To buy WEST SYSTEM products, click here and find your nearest stockist.

Our site uses cookies and similar technologies.

By clicking on the button below you agree to the cookies being used on this site. Learn more

I understand

Use of Cookies

Cookies provide information regarding the computer used by a visitor. We may use cookies where appropriate to gather information about your computer fin order to assist us in improving our website.

We may gather information about your general internet use by using the cookie.  Where used, these cookies are downloaded to your computer and stored on the computer’s hard drive. Such information will not identify you personally. It is statistical data. This statistical data does not identify any personal details whatsoever

You can adjust the settings on your computer to decline any cookies if you wish.  This can easily be done by activating the reject cookies setting on your computer.

Our advertisers may also use cookies, over which we have no control.  Such cookies (if used) would be downloaded once you click on advertisements on our website.

See our Privacy policy for more information