Will this work with water based primers for exterior auto body parts?

I would not use this with a primer, It is designed to "melt" the color coat into hard plastics and takes the place of primer for paint adhesion

Can Sand Free be used on plastic chrome I want black out or will it soften and wrinkle the chrome coating?

You need to use SEM sku# 39863 if you are using an adhesion promoter. Sand Free is probably to agressive for the plastic chrome

Will this work for the textured Sail panels for my Avalanche?

I used it on the fenders/trim on a jeep wrangler and it worked very well. To answer your question it depends on exactly what kind if plastic you want to paint. SEM has a good website. Look up what plastic your sail panels are made from and see if SEM lists it as one that this works on. Just make sure to paint it while it is still wet with this solvent.

What is the difference between this and their other plastic adhesion promoters?

I haven't used mine yet, however, it is recommended in this paint system and I have seen the results when the instructions are followed as directed by the manufacturer. I am not going to risk using anything else.

Sem 38363 Sand Free 11 6 Oz | Desertcart Japan

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Description

🛠️ Elevate your finish game—adhere like a pro, skip the sand!

TRUSTED SEM QUALITY - Backed by a leading brand in protective coatings for professionals
CRACK RESISTANT FORMULA - Ensures long-lasting, resilient protection under stress
UNMATCHED ADHESION BOOST - Softens tough plastics for flawless bonding every time
EFFORTLESS WET ON WET USE - Streamlines your workflow by eliminating sanding hassles
PRECISION APPLICATION SIZE - 11.6 oz bottle designed for optimal control and minimal waste

SEM 38363 Sand Free is an 11.6 oz adhesion promoter designed to soften plastic substrates, enabling superior wet-on-wet bonding without sanding. Its crack-resistant formula ensures durable, professional-grade results, making it an essential tool for flawless protective coatings.

Specifications

ASIN	B00B3HXM6I
Best Sellers Rank	#74,350 in Automotive ( See Top 100 in Automotive ) #93 in Automotive Spray Paint
Brand	SEM
Brand Name	SEM
Color	Clear
Compatible Material	Plastic
Container Type	Can
Customer Reviews	4.6 out of 5 stars 150 Reviews
Global Trade Identification Number	00646786383632
Included Components	SEM 38363 Sand Free - 11.6 oz
Item Form	Aerosol
Item Package Quantity	1
Item Type Name	SEM 38363 Sand Free - 11.6 oz
Item Weight	8 ounces
Manufacturer	SEM
Model	38363
Other Special Features of the Product	Crack Resistant
Part Number	38363
Special Feature	Crack Resistant
Specific Uses For Product	Interior/Exterior
UPC	646786383632
Unit Count	329 Grams
Volume	11.6 Fluid Ounces
Warranty Description	Warranty

Reviews

N**E

28.06.2025

B**8

26.04.2026

G**Y

14.04.2019

M**K

22.12.2025

M**T

5.02.2026

R**N

30.04.2015

B**Y

25.07.2023

C**W

9.08.2021

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