---
product_id: 9372869
title: "39863 Plastic Adhesion Promoter Aerosol - 14.8 oz."
brand: "sem"
price: "€ 88.22"
currency: EUR
in_stock: true
reviews_count: 8
category: "Sem"
url: https://www.desertcart.sk/products/9372869-39863-plastic-adhesion-promoter-aerosol-14-8-oz
store_origin: SK
region: Slovakia
---

# Precision spray for even coverage Boosts adhesion on tough plastics 14.8 oz aerosol for professional use 39863 Plastic Adhesion Promoter Aerosol - 14.8 oz.

**Brand:** sem
**Price:** € 88.22
**Availability:** ✅ In Stock

## Summary

> 🎨 Elevate your paint prep game — stick with SEM for flawless finishes!

## Quick Answers

- **What is this?** 39863 Plastic Adhesion Promoter Aerosol - 14.8 oz. by sem
- **How much does it cost?** € 88.22 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/9372869-39863-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 Experts:** Top-ranked in automotive adhesives with 4.7-star rating from 689+ pros
- • **Durability You Can Trust:** Enhances paint durability even over adhesives, preventing peeling and flaking
- • **Pro-Grade Spray Delivery:** Aerosol can ensures smooth, even application with low viscosity formula
- • **Unmatched Plastic Bonding:** Seals and primes raw plastic bumpers & interiors for flawless topcoat adhesion
- • **Versatile Surface Compatibility:** Works seamlessly on challenging plastics like PP and TPO, plus metal surfaces

## Overview

SEM 39863 Plastic Adhesion Promoter is a 14.8 oz aerosol spray designed to enhance adhesion of topcoats on raw plastic bumpers and interior parts, especially on difficult plastics like PP and TPO. It ensures durable, long-lasting paint bonds on plastic and metal surfaces, making it a must-have for professional automotive and furniture repair.

## Description

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

Review: Cladding paint prep is esential. - Use as a prep before you repaint cladding. Works great.
Review: Works very well.. - Worked great on plastic and very well on metal. Paint sticks even is very durable on top of adhesive’

## Features

- New

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B007VTSRZ8 |
| Best Sellers Rank | #13,374 in Automotive ( See Top 100 in Automotive ) #30 in Body Repair & Restoration Adhesives |
| Brand | SEM |
| Brand Name | SEM |
| Color | clear |
| Compatible Material | Plastic |
| Container Type | Aerosol Can |
| Customer Reviews | 4.7 out of 5 stars 689 Reviews |
| Item Form | Spray |
| Item Package Quantity | 1 |
| Item Weight | 16 ounces |
| Manufacturer | SEM |
| Material | adhesion promoter |
| 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 |
| Special Feature | Promotes adhesion to problem plastics such as PP or TPO and repair materials |
| 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

![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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Cladding paint prep is esential.
*by J***K on July 17, 2026*

Use as a prep before you repaint cladding. Works great.

### ⭐⭐⭐⭐⭐ Works very well..
*by T***. on May 3, 2026*

Worked great on plastic and very well on metal. Paint sticks even is very durable on top of adhesive’

### ⭐⭐⭐⭐⭐ Got the job done
*by E***T on June 2, 2026*

Great adhesion

## 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)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

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

---

*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-08-24*