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SEM 39683 Grey Self Etching Primer - 15.5 oz.

Q: Why does SEM not recommend applying color directly to this primer?

This is an etching primer. I, used it on Magnesium after etching with Borax and baking soda mixed. After drying I, used this prime 4 light coats over 4 days 1200 wet sand paper. I, then coated with primer for the paint ! 3 coats wet sad 3 coats of final coat rubbed out with fine polishing compound.I, did this project in Nov 19. So far so good.

Q: What type of paint can be applied on top of the primer? any paint? sprays? water based? oil based? are there any restrictions?

I would recommend staying with the same brand of paint for both primer and top coat. Although the SEM primer seems to work well with most top coats, I had a bad experience using it with a Rustoleum top coat. After priming bare aluminum with the SEM self-etch and letting it cure overnight, I applied a Rustoleum top coat. Within a few hours both the primer and the top coat pealed off. I spoke with the the SEM and the Rustoleum technical folks but neither knew exactly what caused this. Both, however, recommended sticking with the same brand for primer and top coat. I would recommend doing some test sprays, letting the primer cure the recommended length of time before applying the top coat. Note that the SEM self-etch is acetone based, and this might cause a problem with topcoats that use other bases, especially if the SEM has not been cured long enough.

Q: I have stripped aluminum bare. self etching primer, then primer, then top coat? are all these these paints made by sem?

All i can tel u that the image is sem

Q: Is this the same as zinc chromate primer?

I do not have the can anymore. So I cannot read the ingredients. However I do not think it contains zinc chromate...which is used for marine and auto applications. This stuff works great for bonding to bare aluminum parts that will need to be painted. Hope this helps.

4.6/5

Product ID: 265517976

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Details

Brand
SEM
Colour
Grey
Finish type
Matte
Size
15.5 Ounce of
Special features
Fast-Drying

⚡Fast-Drying in minutes

🎨Matte Grey finish for sleek base

🛡️Superior Adhesion power

Frequently Bought Together

SEM 39683 Grey Self Etching Primer - 15.5 oz.

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Description

⚡ Elevate your refinishing game with fast, flawless adhesion!

READY TO USE AEROSOL - Convenient spray can for effortless application
SPEED MEETS PRECISION - Dries rapidly to keep your projects on schedule
UNMATCHED SURFACE GRIP - Ensures paint bonds flawlessly every time
VERSATILE PRO GRADE USE - Perfect for automotive, metal, and industrial refinishing
OPTIMAL COVERAGE EFFICIENCY - Covers up to 5.6 sq.m per liter, minimizing waste

The SEM 39683 Grey Self Etching Primer is a 15.5 oz aerosol designed for professional automotive and industrial use. Featuring a fast-drying formula and excellent adhesion, it provides a durable matte grey base coat that covers up to 5.6 square meters per liter, streamlining metal restoration and refinishing projects with ease.

Specifications

Part number	39683
Item Weight	454 g
Product Dimensions	6.99 x 6.99 x 23.5 cm; 453.59 g
Item model number	39683
Size	15.5 Ounce (Pack of 1)
Color	Grey
Finish	Matte
Item Package Quantity	1
Coverage	4.7-5.6 sq.m/liter
Special Features	Fast-Drying, Excellent Adhesion
Specific uses	automotive repair and refinishing, metal restoration projects, industrial coating applications
Included components	Aerosol Can
Batteries Included?	No
Batteries Required?	No

Have a Question? See What Others Asked

Why does SEM not recommend applying color directly to this primer?

What type of paint can be applied on top of the primer? any paint? sprays? water based? oil based? are there any restrictions?

I have stripped aluminum bare. self etching primer, then primer, then top coat? are all these these paints made by sem?

Is this the same as zinc chromate primer?

Common Questions

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