WAS: Red Oxide .NOW: Red colored ZC?

[Michael Horowitz]

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

[Orval Fairbairn]

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.

--
Remve "_" from email to reply to me personally.

[W P Dixon]

Michael,
From my experiences the ZC we always used was green or yellow. There is
a Zinc Oxide Primer that is also green or yellow. The ZO primers are
supposed to be alot "safer" to use. It's pretty new and I have not used it
so I can't comment on how well it works. You may need another 337 to let you
use the ZO primer, isn't all that paperwork fun?! ; )

Patrick
student SP
aircraft structural mech

"Michael Horowitz" > wrote in message
...
> 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
>

[Stealth Pilot]

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

[Michael Horowitz]

Wonder if that's what was once know as "red-lead"? - MIke

On Sun, 27 Nov 2005 17:00:22 +0800, Stealth Pilot
> wrote:

>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

[Rich S.]

"Michael Horowitz" > wrote in message
...
> Wonder if that's what was once know as "red-lead"? - MIke

Yup. That - and the stuff made by Heinz that won't exit the bottle.

Rich S.

[[email protected]]

>>In article >,
>> Michael Horowitz > wrote:

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

Someone answered "yes"

And then "Michael Horowitz" > demonstrated the
problem with top posting in message:
> ...
> > Wonder if that's what was once know as "red-lead"? - MIke
>

To which

Rich S. responded:
> Yup. That - and the stuff made by Heinz that won't exit the bottle.
>

Perhaps in some circles but generall 'red lead' primer used lead oxide
(not monoxide) as a pigment.

--

FF

[flybynightkarmarepair]

Red Lead and Red Iron Oxide primers are NOT identical.

And if you ever served in the USN, the viscous material sourced in
Pennsylvania used to keep your "slider" (hamburger patty) stuck to the
bun was also called "Red Lead".

[Rich S.]

"flybynightkarmarepair" > wrote in message
oups.com...
> Red Lead and Red Iron Oxide primers are NOT identical.
>
> And if you ever served in the USN, the viscous material sourced in
> Pennsylvania used to keep your "slider" (hamburger patty) stuck to the
> bun was also called "Red Lead".

I guess I'm just familiar with the stuff they rolled on freighter bottoms.

Rich "Todd Shipyards, pipe shop, circa 1958" S.

[Stealth Pilot]

On Sun, 27 Nov 2005 08:57:26 -0500, Michael Horowitz
> wrote:

>Wonder if that's what was once know as "red-lead"? - MIke
>

in australia, NO.
red lead is actually a lead based paint, now banned.
red oxide zinc chromate was entirely different.
Stealth Pilot