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SEM Flexible Primer Surfacer Aerosol Gray is rated 3.0 out of 5 by 4.
Rated 5 out of 5 by from Works great on plastic Bought this to prime plastic catchers masks. First primer I've found that holds well. Haven't seen how it holds up to a baseball season yet. Builds very nicely folling the instructions on the can. I scuffed the surface, used SEM plastic prep and then this primer. 3 light coats and I have full coverage and good build. was able to scuff the surface and paint. Very happy with it so far.
Date published: 2015-03-16
Rated 4 out of 5 by from Great product This product sprays easily and builds up nicely. Very easy to sand and adhesion to fiberglass is excellent.
Date published: 2013-10-01
Rated 2 out of 5 by from unhappy Bought 5 cans. 2 of the five were "spitters". Unusable. When I tried spraying with them they would spit solid drops of product. Hoping Eastwood will take them back. Other than the faulty cans this product works well with flexible materials such as bumper covers.
Date published: 2015-06-07
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SEM Flexible Primer Surfacer Aerosol Gray

SEM Flexible Primer Surfacer Aerosol Gray

Item #50022Z Brand: SEM

High-solids formula for fast film build; ideal for flexible bumper repairs
Quantity: close

In stock

Only $16.99
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SEMĀ® Flexible Primer Surfacer provides superior film build and flexibility

  • Ready to spray
  • Quick drying
  • Easy to sand
  • Flexible formulation
  • Topcoat with most refinish materials

Flexible Primer Surfacer is a flexible, sandable primer capable of adhering to difficult plastics and hiding minor surface defects.

This convenient aerosol primer is ideal for flexible bumper repairs. Can also be used on urethane's, plastics, and other substrates. Builds quickly thanks to its high solids formulation. Sands easily. Compatible with most automotive finishes. One can covers about 10 square feet.

More info...
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(1) SEM Flexible Primer Surfacer (13-oz. aerosol)


Click here for Technical Data Sheet

Click here for Safety Data Sheet


Always wear eye, skin and respiratory protection when working with paints and chemicals Always apply in a well-ventilated area away from open flame. Shelf life is 2 years under normal cool and dry conditions. Keep away from children. Consult MSDS for specific warnings and precautions.


Limited 2 year manufacturer's defect warranty. Made in USA.


Clean surface with PRE Painting Prep, then prep with Plastic Prep (see "Accessories" tab for both). Apply 2 medium coats, allowing 5-10-minute flash time between coats. 30-40 minutes for full cure. Block-sand with 320-400-grit. Apply topcoat.


(Q) Can I use Flexible Primer Surfacer on polypropylene plastics?
(A) Yes, if primer is needed to fill minor imperfections. If you're just trying to get paint to adhere, use 52366Z SEM Plastic Adhesion Promoter, then color coat.

(Q) Can I use Flexible Primer Surfacer on my dashboard?
(A) No, since it will crack over time.

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