---
product_id: 265517975
title: "SEM 39673 Black Self Etching Primer - 15.5 oz."
brand: "sem"
price: "£46.35"
currency: GBP
in_stock: true
category: "Sem"
url: https://www.desertcart.co.uk/products/265517975-sem-39673-black-self-etching-primer-15-5-oz
store_origin: GB
region: United Kingdom
---

# Fast 30-min dry time Matte black finish Superior metal adhesion SEM 39673 Black Self Etching Primer - 15.5 oz.

**Brand:** sem
**Price:** £46.35
**Availability:** ✅ In Stock

## Summary

> 🖤 Prime like a pro, finish like a boss.

## Quick Answers

- **What is this?** SEM 39673 Black Self Etching Primer - 15.5 oz. by sem
- **How much does it cost?** £46.35 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/265517975-sem-39673-black-self-etching-primer-15-5-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

- • **Rapid Drying Power:** Get back to work in just 30 minutes—no downtime, no delays.
- • **Unmatched Adhesion:** Self-etching formula ensures your paint sticks like a pro—no peeling, no flaking.
- • **Matte Black Elegance:** A sleek, professional finish that preps your metal surfaces with style.
- • **Stain Resistant Shield:** Keeps your primer looking flawless, resisting stains and imperfections.
- • **Versatile Outdoor Ready:** Engineered for tough outdoor conditions—durable and water resistant for lasting results.

## Overview

SEM 39673 Black Self Etching Primer is a fast-drying, matte black enamel primer designed for superior adhesion on bare metal surfaces. With a quick 30-minute dry time and stain-resistant properties, it delivers a durable, professional-grade base coat ideal for automotive and industrial applications.

## Description

Self Etching Primer is a first-step coating that provides excellent adhesion to bare substrates.

## Features

- Item Category: Paint
- Item Trademark: SEM
- manufacturer: Generic

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000PKZ3IY |
| ASIN  | B000PKZ3IY |
| Age Range Description | Adult |
| Best Sellers Rank | #68,207 in Automotive ( See Top 100 in Automotive ) #16 in Primers |
| Brand Name | SEM |
| Color | Black |
| Color Code | #000000 |
| Container Type | Can |
| Coverage | 12-15 sq ft/15.5 oz |
| Customer Reviews | 4.6 4.6 out of 5 stars (502) |
| Customer reviews | 4.6 4.6 out of 5 stars (502) |
| Date First Available  | 6 February 2013 |
| Dry Time In Hours | 0.5 |
| Finish Type | Matte |
| Full Cure Time | 1 Hours |
| Global Trade Identification Number | 00646786396731 |
| Included Components | Aerosol |
| Indoor Outdoor Usage | Outdoor |
| Is Discontinued By Manufacturer  | No |
| Is Waterproof | False |
| Item Form | Liquid |
| Item Volume | 65.66 Cubic Inches |
| Item Weight | 590 g |
| Item model number  | 39673 |
| Manufacturer | SEM |
| Manufacturer  | SEM |
| Model Name | 39673 |
| Model Number | 39673 |
| Paint Type | Enamel |
| Part Number | 39673 |
| Product Dimensions  | 15.24 x 5.08 x 5.08 cm; 589.67 g |
| Size | 15.5 Ounce (Pack of 1) |
| Special Features | Stain Resistant |
| Specific Uses For Product | Automotive, Industrial |
| Surface Recommendation | Metal |
| UPC | 646786396731 |
| Unit Count | 15.5 Grams |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** SEM
- **Colour:** Black
- **Finish type:** Matte
- **Item volume:** 65.66 Cubic Inches
- **Size:** 15.5 Ounce (Pack of 1)

## Images

![SEM 39673 Black Self Etching Primer - 15.5 oz. - Image 1](https://m.media-amazon.com/images/I/81wuMdZCoQL.jpg)

## Questions & Answers

**Q: Is this compatible with a urethane basecoat and clearcoat?**
A: Self etch primer is for bare metal. You should seal it first with a top coat of sealer primer before basecoat.  I have put basecoat directly on it with no problems though.

**Q: Will this stick to plastic ?**
A: I would probably use SEM Flexible Primer Surfacer on plastic.

**Q: Should this product be used on bumpers before spraying with SEM black trim paint?**
A: I'm not an expert but I use this product on bare "not chrome" metal. If you're talking about a chrome bumper I'm just not sure if this product would actually "etch" it.  That's an interesting question though.  I think you should call SEM or Eastwood products and ask. Eastwood has a lot of products and experience with coating different materials. Check their website out. I'm interested to hear what worked for you so please let me know.

**Q: why is the 2 pack more expensive than 2 single cans combined?**
A: I bought 2 and 4 packs cheaper 
Just have to search

## Frequently Bought Together

- SEM 39673 Black Self Etching Primer - 15.5 oz.
- SEM 39683 Grey Self Etching Primer - 15.5 oz.
- SEM 42003 Black High Build Primer - 16 oz.

---

## 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.co.uk/products/265517975-sem-39673-black-self-etching-primer-15-5-oz](https://www.desertcart.co.uk/products/265517975-sem-39673-black-self-etching-primer-15-5-oz)

---

*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-06-29*