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ZINC PHOSPHATE PRIMERS

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Yellow (12 oz)Green (12 oz)
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Overview

Maximum adhesion to bare aluminum and steel Tempo's Zinc Phosphate Primers are recommended for priming bare metal. These primers provide maximum bonding to bare aluminum and steel. Tempo's Primers have been the workhorse in the aviation industry for many years.

The A-701 Yellow and A-702 Green Zinc Phosphate Primers meet the performance standards outlined in Federal Specification T-P-1757A. They also exceed the 800 hours of salt spray fog test (ASTM #B117).
A-701 will replace A-901 Yellow and A-702 will replace A-902 Green.

Aircraft Primers - Zinc Phosphate

Color
Color No. Part No.
Yellow (12 oz.) A-701 09-02128
Green (12 oz.) A-702 09-02127

Documents

Reviews

The product arrived quickly, and works well,

Eric S
September 27, 2019

I ordered two cans of the yellow and two of the green to see how they each look, set up, etc. I personally ended up liking the yellow better I think it dries a little quicker (could just be differences in conditions, hard to say), the texture seems a little grittier but also tougher, and I think the color spreads more evenly than the green. E.g., with a light coat, the color is more even, whereas the green will tend to have lighter and darker spots unless the coat is very, very evenly applied. Overally, very pleased with it - easy to use, plenty of aerosol pressure, and it makes my aluminum look like a proper spar!

David
September 19, 2019

Paint was very easy to use, and delivery was prompt. Shipping costs were high ($11 on a $8 can of paint(!) ) but Im guessing that was because it is hazardous material.

Ken G
September 9, 2019

Used it the other day and it sprayed/covered my small project very well. Unlike some other spray cans that do not lay down a uniform coating.

Paul W
May 23, 2019

good product, served its purpose

Bill
April 5, 2019

Great stuff. I replaced all the skin on my aluminum skinned RV and used this spray primer on all the panels several years ago. All look like new without any corrosion.

Lawrence J
January 31, 2019

Be sure to notice that this is Zinc PHOSPHATE, not Zinc Chromate. You can read about the differences - good and bad. Sprayed on the aluminum evenly. Dry to the touch in a few hours. Was able to paint the next day.

Gary H
September 9, 2018

About the best Spray Bomb primer out there. Just do super light coats. I doubt a thick coat would ever dry! We prefer epoxy primer, but while away from the hangar this stuff works great.(4 out of 5 stars for the drying time)

Westwood A
March 8, 2018

I havent had a chance to use the primer yet, but the service was good.

Richard S
January 6, 2018

Great product, easy to use

Dennis E
November 24, 2017

Q&A

Q: Does the A-702 have a shelf life?

The shelf life for item number A-702 (09-02127) is minimum 3 years. All Plasti-kote and Tempo products have a 3 year minimum shelf life.

Q: Is Tempo A-702 Zinc Phosphate Primer able to be used under Poly-Tak fabric cement? I see it's a modified epoxy product and it doesn't seem to affect the dried primer on a test piece. Thank you, Wayne

In the past Poly Fiber has told us to only use Poly Tak over epoxy primers, so I would say no, unless Poly Fiber tells you something different for your application.

Q: What is optimum coverage? I am using the green and it seems to take 4 coats or more to get a solid green color, but is it necessary to go that thick? I don't mind seeing an uneven coat as long as it provides protection. Also the fewer coats the less weight, not to mention less $$ in primer.

It doesn't say in the instructions, but in general, an acid etch primer like this does not require it to be a solid color, just coat the material and it will etch it.

Q: What kind of surface prep is required? Do I need to use an etchant before using this product?

This is a self etching primer and intended to be used on bare metals. An etch is not needed.

Q: What kind of surface prep is required? Do I need to use an etchant before using this product?

This is a self etching primer and intended to be used on bare metals. An etch is not needed.

Q: Is this primer to promote adhesion of a top coat or corrosion protection or both? Will it provide corrosion protection without a top coat?

This is a zinc phosphate self etching primer. It does help adhesion, but more commonly used for corrosion protection without a top coat. commonly used on aluminum interior parts.

Q: Other than color, any differences between the yellow and green Tempo zinc phosphate aviation primer? Read anecdotal write-ups that yellow goes on smoother ... fact or fiction?

We are unaware of any other difference besides the color. We sell twice a much of the green than the yellow primer.

Q: For surface prep, other primers require a light sanding after cleaning. The instructions on the spray can only indicate that the surface should be clean, dry, and free of dust. Is light sanding required or recommended? Thanks

Per the supplier: This will depend if the surface you are planing on putting this product on is smooth or rough. If the surface is rough, then a light sanding will be recommended.

Q: To clarify the surface prep question, clean, dry, smooth aluminum sheet used for skins should not be sanded prior to application?

Correct, as per vendor, this seems to be more of a personal opinion. If the surface is smooth enough with no rough spots then it would not need to be lightly sanded. It will only needed to be lightly sanded if what you are spraying the primer on is rough, to sand down the rough spots to make it smooth.

Q: I just painted my first item with this primer. It is a mild steel bracket that was prepped with scotch bright and Acetone. After half a day of drying, it is still very tacky to the touch. Is this normal?

Per the supplier: This may be depending on what the weather conditions are like. Please review the tech data sheet which is linked in the "Documents" tab of this web page for more information.

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