Description
Comparison points and tradeoffs
When comparing SEM 39728 Super Flex – 1 Pint with other Body Paint options, use this source-backed detail as the primary discriminator: Product identity: SEM 39728 Super Flex – 1 Pint.
Use this second fact to evaluate the tradeoff: Super SEM Flex is a paint additive that adds flexibility to urethanes, enamels and lacquers. Perfect for refinishing flexible substrates such as bumpers, vinyl convertible tops and flexible plastics. A third point to compare across alternatives is: Category: Paint & Paint Supplies / Paints & Primers / Body Paint.
Alternative-selection boundary
Choose an alternative when its stated identifiers, application, package, or specifications better match the requirement; no unverified competitor claim is introduced here.
Complete source-backed product details
Super SEM Flex is a paint additive that adds flexibility to urethanes, enamels and lacquers. Perfect for refinishing flexible substrates such as bumpers, vinyl convertible tops and flexible plastics.
Source product highlights
About this item
- New




Robert Nicholls –
Great product. I have used their products for years.
Classic_rodder –
I mixed in according to the label, sprayed on beautifully, except that it did not harden. It stayed tacky. Called sem directly, it turns out this bottle was past its shelf life.
Brad Hornbaker –
never fails when i use this product
Kevin45 –
Used this with acrylic urathane automotive in base coat and in clear coat on 2015 Ford Focus bumper cover at 15-20%. It looks great with plenty of flex.Will use again.
Ron Edmonson –
work great
phil Wisconsin –
I painted a plastic automotive bumper and used this flex additive. This is a vital chemical needed to ensure your paint doesn’t flake off your painted plastic parts. (You also need adhesion promoter as prep).I can’t remmber if I added this to the clear coat as well… honestly I am not a professional. I whacked out my bumper on a part of a truck tire on the highway, and I decieded to try this out. It has lasted me 6 months and looks pretty dang good, using some materials and tools off of Amazon.
Steven R. –
Used this product with Nason base coat and clear also with speedokote performed well