Cortec corrosion primer

After doing a bit of research, I'd like to use Cortec on the mating surfaces of my airplane where necessary.  My STOL 750 will eventually be on floats, so I'd like the peace of mind that this will provide and I really like the low VOCs and having it dry clear.

Problem is, I can't seem to find where to purchase small quantities.  I've been having an e-mail discussion with the Canadian distributor who tells me the smallest quantity they will sell is a 5 gallon pail.... at $100/gallon!

Apparently you can order smaller quantities in the States under the Bull Frog namebrand?  Anyone have any experience with finding smaller quantities?

I emailed the Zenair office in Canada based on a previous forum message that they sell it, but I'm told that isn't the case and that they only sell Zinc Chromate.

Any help/input most welcome!

JR

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Permalink Reply by Clint L Gosch on August 22, 2017 at 5:28pm

Hi Jason, I purchased mine from Zenith's Mexico Missouri location. I think it was the quart size.

Permalink Reply by Loren Warner on August 22, 2017 at 9:04pm

We used Cortec everywhere the pieces rivet or bolt together, and love that you can work with it in a confined space without ventilation concerns. 

Permalink Reply by Jason R on August 22, 2017 at 9:09pm

Where did you purchase yours?

Permalink Reply by Loren Warner on August 22, 2017 at 9:54pm

Jason, I was lucky to befriend a Cortec distributer who was kind enough to supply me sample packs.  Hopefully a distributer will send you sample packs as well.  Otherwise, I believe Zenith is your best source for smaller amounts.  We used about 6 pints total.  By the way, before closing we used zinc phosphate on all large and inaccessible areas such as inside wings, under seats, aft fuselage, etc.

Permalink Reply by Jason R on August 25, 2017 at 10:30am
That's a top reason I want to use Cortec... the lack of fumes.

The problem I'm having is finding small quantities here in Canada. The Canadian distributor only sells in 5 gallon pails at $100 a gallon.

I placed an inquiry with Zenair in terms States and they sell it by the quart but the shipping is astronomical.

Anyone coming back to Canada after the factory open house who'd be willing to bring me some back? LOL
Permalink Reply by Loren Warner on August 25, 2017 at 3:14pm

According to my POC at Cortec said "Since there seems to be a consortium of builders up there, I would think that someone could buy the 5 gallons and split it amongst the enthusiasts."  

Well, this what Zenith is doing by providing cortex by the quart.  Also, I do not believe Zenith profits by selling cortex, as they are not a distributer and don't advertise it; they likely just charge enough to recover their expenses. 

I intend to approach our local EAA chapter and aircraft supply store to see if they're interested in doing the same as Zenith.

If I was you, I'd still fill out the sample request form for both the Cortex 373 clear and 373 green, and see what happens. 

Permalink Reply by John A. Minatelli on August 27, 2017 at 8:53pm
Hi Jason,
Cortec is simply latex rubber in its natural form. To keep is flowing just add a little ammonia water. Once it dries on metal surfaces it polymerises making it an excellent corrosion inhibitor. You can buy crude latex instead of the cortex product since that is all that it is.

PhD in organic chemistry and fellow builder
Permalink Reply by James Fisher on July 9, 2020 at 4:59am

I CAN SELL CORTEC IN AUSTRALIA

I bought a 19L of Cortec, it is the smallest quantity that they sell, and I can confirm that it is REALLY expensive. 

I re-sell it by the litre.  Just message me if you need any.  One liter will probably do a whole aircraft.

James@swishprojects.com.au

Permalink Reply by Lawrence Bird on July 9, 2020 at 9:32am

Is this the same stuff; or something different...

See:  https://www.theruststore.com/Cortec-CorShield-Extreme-Outdoor-Corro...

Permalink Reply by Bob Simmons on March 19, 2022 at 5:56pm

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