Is this compatible with a urethane basecoat and clearcoat?

Self etch primer is for bare metal. You should seal it first with a top coat of sealer primer before basecoat. I have put basecoat directly on it with no problems though.

Will this stick to plastic ?

I would probably use SEM Flexible Primer Surfacer on plastic.

Should this product be used on bumpers before spraying with SEM black trim paint?

I'm not an expert but I use this product on bare "not chrome" metal. If you're talking about a chrome bumper I'm just not sure if this product would actually "etch" it. That's an interesting question though. I think you should call SEM or Eastwood products and ask. Eastwood has a lot of products and experience with coating different materials. Check their website out. I'm interested to hear what worked for you so please let me know.

why is the 2 pack more expensive than 2 single cans combined?

I bought 2 and 4 packs cheaper Just have to search

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Description

🖤 Prime Like a Pro – The Ultimate Metal Prep Powerhouse

ECO SMART CHOICE - VOC compliant formula that meets environmental standards without compromising performance.
COMPACT LIGHTWEIGHT - Easy to handle 590g aerosol can, ideal for professional and DIY use alike.
PRECISION SELF ETCHING - Creates a perfect base layer that ensures long-lasting paint durability and finish.
UNIVERSAL METAL BONDING - Engineered for unbeatable adhesion on steel, aluminum, copper, and stainless steel.
FAST TRACK YOUR PROJECTS - Dries rapidly to keep your workflow seamless and efficient.

SEM Paints Self-Etching Black Primer Aerosol (Model 39673) is a quick-drying, VOC compliant primer designed for superior adhesion on multiple metal surfaces including steel, aluminum, copper, and stainless steel. Its self-etching formula ensures a durable base coat, making it an essential first step for professional-grade paint jobs.

Specifications

ASIN	B000PKZ3IY
Age Range Description	Teen
Brand	SEM
Brand Name	SEM
Colour	Black
Container Type	Tin
Coverage	12-15 sq ft/15.5 oz
Customer Reviews	4.6 out of 5 stars 501 Reviews
Finish Type	Matte
Finish type	Matte
Global Trade Identification Number	00646786396731
Is Waterproof	False
Item Form	Liquid
Item Volume	65.66 Cubic Inches
Item Weight	590 g
Item volume	65.66 Cubic Inches
Manufacturer	SEM
Model Name	39673
Model Number	39673
Paint Type	Enamel
Part Number	39673
Size	15.5 Ounce
Special Features	Excellent Adhesion, Quick Drying
Special feature	Excellent Adhesion, Quick Drying
Specific Uses For Product	Aluminium surfaces
Surface Recommendation	Aluminium
UPC	646786396731
Water Resistance Level	Water Resistant

Reviews

J**E

Finally, a good, easy to apply, self etching primer!

10.07.2016

S**S

Very high quality product

29.12.2023

B**Y

Works great

7.06.2024

J**F

Great finish and quality but the spary can sucks!

27.01.2019

R**T

Awesome product

5.11.2024

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