---
product_id: 9372869
title: "SEM 39863 Plastic Adhesion Promoter Aerosol - 14.8 oz."
brand: "sem"
price: "296.55 DT"
currency: TND
in_stock: true
category: "Sem"
url: https://www.desertcart.tn/products/9372869-sem-39863-plastic-adhesion-promoter-aerosol-14-8-oz
store_origin: TN
region: Tunisia
---

# Compatible with raw plastic surfaces Boosts adhesion strength 14.8 oz aerosol spray SEM 39863 Plastic Adhesion Promoter Aerosol - 14.8 oz.

**Brand:** sem
**Price:** 296.55 DT
**Availability:** ✅ In Stock

## Summary

> 🛠️ Elevate your plastic prep game—stick with the best!

## Quick Answers

- **What is this?** SEM 39863 Plastic Adhesion Promoter Aerosol - 14.8 oz. by sem
- **How much does it cost?** 296.55 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/9372869-sem-39863-plastic-adhesion-promoter-aerosol-14-8-oz)

## Best For

- sem enthusiasts

## Why This Product

- Trusted sem brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted by Pros:** Rated 4.7 stars with 670+ reviews
- • **Unmatched Adhesion Power:** Seals substrates for superior topcoat bonding
- • **Precision Aerosol Delivery:** Easy, even spray application every time
- • **Lightweight & Low Viscosity:** Smooth, fast-drying formula for flawless finishes
- • **Versatile Plastic Compatibility:** Perfect for bumpers and interior parts

## Overview

SEM's 39863 Plastic Adhesion Promoter is a 14.8 oz aerosol spray designed to enhance the adhesion of topcoats on raw plastic automotive parts. With a low viscosity formula, it seals substrates effectively, ensuring durable, professional-grade finishes favored by body repair pros.

## Description

Plastic Adhesion Promoter helps seal substrates and increases adhesion of topcoat materials to raw plastic bumpers and interior parts.

## Features

- New

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B007VTSRZ8 |
| Best Sellers Rank | #21,300 in Automotive ( See Top 100 in Automotive ) #40 in Body Repair & Restoration Adhesives |
| Brand Name | SEM |
| Color | clear |
| Compatible Material | Plastic |
| Container Type | Aerosol Can |
| Customer Reviews | 4.7 4.7 out of 5 stars (683) |
| Item Form | Spray |
| Item Package Quantity | 1 |
| Item Weight | 1 Pounds |
| Manufacturer | SEM |
| Material Type | adhesion promoter |
| Model | 39863 |
| Other Special Features of the Product | Promotes adhesion to problem plastics such as PP or TPO and repair materials |
| Part Number | 39863 |
| Specific Uses For Product | Repair, Furniture |
| UPC | 646786398636 |
| Unit Count | 14.8 Ounce |
| Viscosity Level | Low |
| Volume | 14.8 Fluid Ounces |
| Water Resistance Level | Not Water Resistant |

## Product Details

- **Brand:** SEM
- **Item Form:** Spray
- **Material:** adhesion promoter
- **Special Feature:** Promotes adhesion to problem plastics such as PP or TPO and repair materials
- **Specific Uses For Product:** Repair, Furniture

## Images

![SEM 39863 Plastic Adhesion Promoter Aerosol - 14.8 oz. - Image 1](https://m.media-amazon.com/images/I/218CZj3QLeL.jpg)

## Questions & Answers

**Q: Getting ready to paint a plastic canoe. Will this product work well for that?**
A: Without knowing the type of plastic the canoe is made of I can’t say for sure. 
It’s designed to be sprayed on, then the paint applied between 5 and 15 minutes. 
When used on my door panels, I can only guess that it has helped with the adhesion since there have been no spots where the paint has chipped off. 
SEM is a great product line. 
I would recommend using this product to prep the canoe before painting, especially since it will be in water

**Q: Should the sem 39863 aerosol can have a rattle ball in it?
have shaken it multiple times and it does not seem to have one??**
A: Mine also does not have a rattle ball.  I got it a couple of years ago. Worked great. I'm guessing its doesn't separate as much in the can; so it does need it.

**Q: will this product cover or repair cracked leather, arms rests in vehicles ? Thnaks**
A: No , I don't think it would .

**Q: I have chrome plastic grill trim which I want to paint black. Will this work if I scuff the plastic, use adhesion promoter, primer a black paint**
A: I have tried every adhesion promoter out there. I have sanded the Chrome completely dull. First a small rock chip then the wicking under the finish and now you have a chrome grille all jacked up with scratches and patches of black. Take my word for it just buy a black grille.  I have been in the industry since 1980. Nothing sticks to chrome. Period.

## Frequently Bought Together

- SEM 39863 Plastic Adhesion Promoter Aerosol - 14.8 oz.
- SEM 38353 Plastic Prep - 12 oz.
- SEM Paints SEM15243 Satin Black Color Coat Aerosol 12 Ounce (Pack of 1)

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**Shop now:** [https://www.desertcart.tn/products/9372869-sem-39863-plastic-adhesion-promoter-aerosol-14-8-oz](https://www.desertcart.tn/products/9372869-sem-39863-plastic-adhesion-promoter-aerosol-14-8-oz)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-06-25*