On Sat, 26 Nov 2005 18:53:52 GMT, Orval Fairbairn
wrote:

In article ,
Michael Horowitz wrote:

Does Zinc Chromate come in a redish/brown color so that it could be
confused with Red Oxide Primer?

Reason I'm asking is I got the CD for the Tcraft I'm examining. It has
a 337 from 1966 stating "all tubing cleaned and primed with red oxide
primer".

Then I have a more recent 337 dated 1978 which says "Tubing zinc
chromated and preserved linseed oil". That appears to be the last 337.

Since I assume ZC is green, I'm confused by what I'm seeing - Mike

I have never seen red ZC. Normal ZC is a yellowish-green; the green
stuff has a bit of black added to make it olive-colored.

in the non aviation engineering world (think bridges and structural
steel) there is a wonderful alkyd enamel paint called "red oxide zinc
chromate paint" which is usually brushed or sprayed on.
it is used to corrosion proof stuff like steel truss work.
in australia we have no real problems buying this stuff in good
hardware and paint shops. it is a rust brown coloured paint.

I've found the stuff to be a wonderful corrosion proofer but have
never used it in aviation work.
( I use tempo brand rattle can zinc chromate just like you)
Stealth Pilot