Sika 209D primer is used to prime painted surfaces and plastic substrates prior to bonding with Sikaflex adhesives. This low viscosity, black pigmented liquid dries when exposed to the air (specifically, reaction with atmospheric moisture). Formerly known as Sika 209N. 1/2 pint.
Areas of Application
Sika Primer-209D is suitable for application to the following substrates:
Because paints and plastics vary so much in their chemical composition, preliminary trials are necessary. Always seek the manufacturer's advice before using the primer on plastics that are prone to stress cracking, such as acrylics, polycarbonates or ABS.
June 20, 2017
I purchased this 209 Primer and it was shipped to me on 5/16/17, it expires at the end of July. It is close to $90 a bottle and I used very little of it. How about Sika providing smaller amounts, or Jamestown and other distributors prorating the price depending on shelf life? It has a 9 month shelf life, but, I was down to 2.5 months when I got it.
May 31, 2016
Product seemed fine but as with the activator, there was WAY too much. I had two windows to do on my boat. I think the can I paid over $50 for could have done a couple hundred at least. Plus, the same cost and amount of overrun on the activator made this almost a $200 project to rebed two deadlight windows on a sailboat. Ridiculous. Plus, one of them came with a "best used by date" that was only 45 days away. Kind of makes a tube of silicone look a lot better.
November 14, 2011
The manufacturer has a good write up on how to use this product. It worked as advertised with no leaks now for 4 years. My only complaint is that the 1 part primer is expensive and has a short shelf life, so you use what you need and throw the rest away. In my case, the two Bomar hatches I fixed used about 5% of the primer so most of it was discarded.
March 6, 2008
Great stuff however it has a shelf life and the volumn is all or nothing.... Too much for small jobs yet necessary for the installation process.