---
product_id: 453118110
title: "39863 Plastic Adhesion Promoter Aerosol - 14.8 oz."
brand: "sem"
price: "R3265"
currency: ZAR
in_stock: true
category: "Sem"
url: https://www.desertcart.co.za/products/453118110-39863-plastic-adhesion-promoter-aerosol-14-8-oz
store_origin: ZA
region: South Africa
---

# Promotes superior adhesion on tough plastics 14.8 oz aerosol for easy application Proudly made in the USA 39863 Plastic Adhesion Promoter Aerosol - 14.8 oz.

**Brand:** sem
**Price:** R3265
**Availability:** ✅ In Stock

## Summary

> 🔗 Stick with the best—adhesion that never quits!

## Quick Answers

- **What is this?** 39863 Plastic Adhesion Promoter Aerosol - 14.8 oz. by sem
- **How much does it cost?** R3265 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/453118110-39863-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

- • **Made in the USA:** Quality you can trust, supporting local manufacturing
- • **Trusted by Pros:** Highly rated with 4.7 stars from 666 users—join the expert community
- • **Spray-On Convenience:** 14.8 oz aerosol delivers precise, mess-free application every time
- • **Versatile Compatibility:** Works seamlessly on both flexible and rigid plastics for diverse projects
- • **Unmatched Plastic Bonding Power:** Ensures flawless adhesion on PP, TPO, vinyl, and painted surfaces

## Overview

The SEM 39863 Plastic Adhesion Promoter Aerosol is a 14.8 oz clear spray designed to enhance bonding on challenging plastics like PP and TPO, as well as vinyl and painted surfaces. Ideal for automotive repair and painting, it ensures superior adhesion and is highly rated by professionals. Made in the USA, this aerosol offers convenient, reliable application for both flexible and rigid plastics.

## Description

Promotes adhesion to problem plastics such as PP or TPO repair materials and topcoats. Works equally well on most flexible or rigid plastics and on painted surfaces. Great when used prior to the Eastwood vinyl and plastic paints.

## Features

- Plastic Bonding Promoter

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B007VTSRZ8 |
| Brand Name | SEM |
| Colour | Clear |
| Compatible Material | Plastic, Vinyl |
| Container Type | Aerosol Can |
| Country of Publication | USA |
| Customer Reviews | 4.7 4.7 out of 5 stars (666) |
| Item Form | Spray |
| Item Package Quantity | 1 |
| Item Weight | 1 Pounds |
| Manufacturer | SEM |
| Manufacturer Part Number | 39863 |
| Material Type | Plastic |
| Model | 39863 |
| Other Special Features of the Product | Plastic Bonding Promoter |
| Specific Uses For Product | Automotive Repair, Painting, Plastics, Vinyl, Painted Surfaces |
| UPC | 646786398636 |
| Volume | 14.8 Fluid Ounces |

## Product Details

- **Brand:** SEM
- **Item Form:** Spray
- **Material:** Plastic
- **Special Feature:** Plastic Bonding Promoter
- **Specific Uses For Product:** Automotive Repair, Painting, Plastics, Vinyl, Painted Surfaces

## Images

![39863 Plastic Adhesion Promoter Aerosol - 14.8 oz. - Image 1](https://m.media-amazon.com/images/I/41Rqpfp7haL.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.co.za/products/453118110-39863-plastic-adhesion-promoter-aerosol-14-8-oz](https://www.desertcart.co.za/products/453118110-39863-plastic-adhesion-promoter-aerosol-14-8-oz)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-10-21*