--- product_id: 11775534 title: "SEM 39673 Black Self Etching Primer - 15.5 oz." brand: "sem" price: "245.24 DT" currency: TND in_stock: true reviews_count: 8 category: "Sem" url: https://www.desertcart.tn/products/11775534-sem-39673-black-self-etching-primer-15-5-oz store_origin: TN region: Tunisia --- # Fast drying in 30 mins Superior adhesion to bare metal Smooth, even spray coverage SEM 39673 Black Self Etching Primer - 15.5 oz. **Brand:** sem **Price:** 245.24 DT **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?** 245.24 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/11775534-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 - • **Generous Coverage:** Covers 40-50 sq ft per 15.5 oz can—more paint, less hassle. - • **Rapid Drying Power:** Dries in just 30 minutes, speeding up your project timeline. - • **Trusted by Experts:** Preferred by automotive pros for consistent, high-quality results. - • **Pro-Level Spray Finish:** Fine mist spray delivers ultra-even coats with minimal effort. - • **Unmatched Metal Bonding:** Self-etching formula ensures rock-solid adhesion on bare aluminum and steel. ## Overview The SEM 39673 Black Self Etching Primer is a professional-grade, oil-based primer designed for superior adhesion on bare metal surfaces. It features a fine spray for even application, dries rapidly within 30 minutes, and covers up to 50 square feet per 15.5 oz can. Widely trusted in automotive and industrial settings, this primer sets the foundation for flawless paint jobs with expert-level reliability. ## Description Self Etching Primer is a first-step coating that provides excellent adhesion to bare substrates. Review: Finally, a good, easy to apply, self etching primer! - This primer is the easiest to use self etching primer I've found so far and it adheres as well or better than anything else I've used for painting bare aluminum. It has a fine spray that goes on far more evenly than most rattle can paints. The primer dries quickly (three thin coats five to ten minutes apart are recommended) and can have the color coats applied after only an hour or so. While the can doesn't specify any temperature range for applying the paint, I have used it in 65-80°F temperatures without any problems. Obviously, the paint will dry faster at higher temperatures. Lower is better since the primer has to be liquid to etch the surface. The can does not recommend applying color coats directly to this primer (SEM doesn't specifically say so but a conventional primer should be used over the self etching primer), which is consistent with other self etching primers I have used which recommend using a regular primer over the self etching primer before applying color coats. I found that Krylon's Dual, a combination of primer and color coat, will work well when applied directly to this self etching primer, which reduces the overall number of coats of paint needed (the Krylon dries very slowly, though, although coats can be applied around 30 minutes apart). As always, proper surface prep is needed. I wet sand the surface with 320 or 400 wet/dry (which one depends how smooth a surface I want), then, after rinsing the piece with hot water and letting it dry thoroughly, I wipe it down with an acetone saturated cloth to degrease the surface (denatured alcohol or lacquer thinner also work well). While degreasing the work and handling it afterword, I wear disposable nitrile gloves to protect my skin and keep skin oils off the surface of the work. The price may seem high compared to other rattle can paints but is actually competitive with other self etching primers when you consider this comes in 15.5 oz. cans instead of the usual 12 oz. cans. Review: Very high quality product - SEM black etching primer covers well and is automotive shop quality. Although not the cheapest it is the best brand I have found. Many body shops I know use SEM products because of the quality they can count on. I have used both the black and the green etching primers from SEM and both work excellent. They also cover much better than others I have tried with disappointment. ## Features - New ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000PKZ3IY | | Age Range Description | Adult | | Best Sellers Rank | #88,118 in Automotive ( See Top 100 in Automotive ) #54 in Automotive Primers | | Brand Name | SEM | | Color | Black | | Color Code | #000000 | | Container Type | container | | Coverage | 40-50 square feet | | Customer Reviews | 4.6 4.6 out of 5 stars (521) | | Dry Time In Hours | 0.5 | | Finish Type | Primer | | Global Trade Identification Number | 00646786396731 | | Included Components | Aerosol | | Indoor Outdoor Usage | Indoor | | Is Waterproof | False | | Item Form | Liquid | | Item Volume | 65.66 Cubic Inches | | Item Weight | 1.3 Pounds | | Manufacturer | SEM | | Model Name | 39673 | | Model Number | 39673 | | Paint Type | Oil | | Part Number | 39673 | | Size | 15.5 Ounce (Pack of 1) | | Special Features | special_feature | | Specific Uses For Product | Automotive, Industrial | | Surface Recommendation | Metal | | UPC | 646786396731 | | Unit Count | 440 Grams | | Water Resistance Level | Water Repellent | ## Product Details - **Brand:** SEM - **Color:** Black - **Finish Type:** Primer - **Item Volume:** 65.66 Cubic Inches - **Paint Type:** Oil - **Size:** 15.5 Ounce (Pack of 1) - **Special Feature:** special_feature - **Specific Uses For Product:** Automotive, Industrial - **Surface Recommendation:** Metal - **Unit Count:** 440 Grams ## 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 ## Customer Reviews ### ⭐⭐⭐⭐⭐ Finally, a good, easy to apply, self etching primer! *by J***E on July 10, 2016* This primer is the easiest to use self etching primer I've found so far and it adheres as well or better than anything else I've used for painting bare aluminum. It has a fine spray that goes on far more evenly than most rattle can paints. The primer dries quickly (three thin coats five to ten minutes apart are recommended) and can have the color coats applied after only an hour or so. While the can doesn't specify any temperature range for applying the paint, I have used it in 65-80°F temperatures without any problems. Obviously, the paint will dry faster at higher temperatures. Lower is better since the primer has to be liquid to etch the surface. The can does not recommend applying color coats directly to this primer (SEM doesn't specifically say so but a conventional primer should be used over the self etching primer), which is consistent with other self etching primers I have used which recommend using a regular primer over the self etching primer before applying color coats. I found that Krylon's Dual, a combination of primer and color coat, will work well when applied directly to this self etching primer, which reduces the overall number of coats of paint needed (the Krylon dries very slowly, though, although coats can be applied around 30 minutes apart). As always, proper surface prep is needed. I wet sand the surface with 320 or 400 wet/dry (which one depends how smooth a surface I want), then, after rinsing the piece with hot water and letting it dry thoroughly, I wipe it down with an acetone saturated cloth to degrease the surface (denatured alcohol or lacquer thinner also work well). While degreasing the work and handling it afterword, I wear disposable nitrile gloves to protect my skin and keep skin oils off the surface of the work. The price may seem high compared to other rattle can paints but is actually competitive with other self etching primers when you consider this comes in 15.5 oz. cans instead of the usual 12 oz. cans. ### ⭐⭐⭐⭐⭐ Very high quality product *by S***S on December 29, 2023* SEM black etching primer covers well and is automotive shop quality. Although not the cheapest it is the best brand I have found. Many body shops I know use SEM products because of the quality they can count on. I have used both the black and the green etching primers from SEM and both work excellent. They also cover much better than others I have tried with disappointment. ### ⭐⭐⭐⭐⭐ Works great *by B***Y on June 7, 2024* Very happy with this product. ## 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.tn/products/11775534-sem-39673-black-self-etching-primer-15-5-oz](https://www.desertcart.tn/products/11775534-sem-39673-black-self-etching-primer-15-5-oz) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-22*