--- product_id: 103791360 title: "40773 zinc Based Weld Thru Primer" brand: "sem" price: "EĀ£ 5604" currency: EGP in_stock: true reviews_count: 8 category: "Sem" url: https://www.desertcart.com.eg/products/103791360-40773-zinc-based-weld-thru-primer store_origin: EG region: Egypt --- # Low weld spatter formula Enhanced metal adhesion Zinc-based corrosion shield 40773 zinc Based Weld Thru Primer **Brand:** sem **Price:** EĀ£ 5604 **Availability:** āœ… In Stock ## Summary > šŸ› ļø Weld Strong, Rust Long ā€“ The Primer Pros Trust! ## Quick Answers - **What is this?** 40773 zinc Based Weld Thru Primer by sem - **How much does it cost?** EĀ£ 5604 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.eg](https://www.desertcart.com.eg/products/103791360-40773-zinc-based-weld-thru-primer) ## 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 - ā€¢ **Metal Bond Mastery:** Superior adhesion to bare metal ensures long-term durability and rust resistance under harsh conditions. - ā€¢ **OEM Trusted Quality:** Recommended by top manufacturers, guaranteeing reliability and performance on every project. - ā€¢ **Ultimate Rust Defense:** Zinc-rich formula delivers industry-leading corrosion protection that outlasts the competition. - ā€¢ **Spray & Protect with Ease:** Smooth aerosol application covers evenly without flaking or peeling, saving time and effort. - ā€¢ **Seamless Weld Compatibility:** Minimizes heat-affected zones and weld spatter for flawless, professional-grade welds every time. ## Overview SEM 40773 Zinc Based Weld Thru Primer is a 12.8 oz aerosol zinc-rich primer designed for superior corrosion protection and enhanced adhesion to bare metal. Engineered to minimize weld spatter and heat-affected zones, it ensures clean, durable welds compatible with MIG and STRSW welding. OEM recommended and highly rated, this matte-finish primer offers reliable rust resistance and smooth application for professional and DIY metalwork projects. ## Description ZincWeld Weld-Through Primer Aerosol 12.8 oz Zinc-based formula for best-in-class corrosion protection. Enhanced adhesion to bare metal for added corrosion protection. No flaking or peeling . not affected by cavity wax. Minimizes the heat affected zone while welding. Low weld spatter formula. Smooth spraying and easy covering. Compatible with MIG and STRSW welding 40773 Review: Great product - Worked well for me. Review: Works great - I use the weld through primer when I gave body sheet metal that will be welded together with plug welds. It's just extra insurance against rust through of the new panels in years to come. Though I no longer work professionally, when I did, SEM products never let me down. Price wise, it's sort of middle of the road, but I don't trust using the less expensive brands that contain a smaller percentage of the rust proofing ingredients and have less electrical conductivity which makes getting a good weld more difficult. ## Features - Weld thru primer - Zinc-based formula for best-in-class corrosion protection - Enhanced adhesion to bare metal for added corrosion protection - OEM recommended ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07KPN6PNT | | Age Range Description | Adult | | Best Sellers Rank | #123,999 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #99 in Primer Paint | | Brand | SEM | | Brand Name | SEM | | Color | gray | | Color Code | #808080 | | Container Type | Can | | Coverage | Corrosion protection between welded substrates | | Customer Reviews | 4.6 out of 5 stars 123 Reviews | | Dry Time In Hours | 24 | | Finish Type | Matte | | Full Cure Time | 24 Hours | | Global Trade Identification Number | 04064678640773 | | Included Components | Spray | | Indoor Outdoor Usage | Outdoor | | Is Waterproof | False | | Item Form | Aerosol | | Item Volume | 44.93 Cubic Inches | | Item Weight | 16 ounces | | Manufacturer | SEM Products | | Model Number | SEM-40773 | | Paint Type | Primer | | Part Number | 40773 | | Size | 12.8 Ounce (Pack of 1) | | Special Feature | Corrosion Resistant, Low Spatter | | Special Features | Corrosion Resistant, Low Spatter | | Specific Uses For Product | Interior/Exterior | | Surface Recommendation | Metal | | UPC | 646786407734 | | Unit Count | 12.8 Ounce | | Water Resistance Level | Water Resistant | ## Product Details - **Brand:** SEM - **Color:** gray - **Finish Type:** Matte - **Item Volume:** 44.93 Cubic Inches - **Paint Type:** Primer - **Size:** 12.8 Ounce (Pack of 1) - **Special Feature:** Corrosion Resistant, Low Spatter - **Specific Uses For Product:** Interior/Exterior - **Surface Recommendation:** Metal - **Unit Count:** 12.8 Ounce ## Images ![40773 zinc Based Weld Thru Primer - Image 1](https://m.media-amazon.com/images/I/617m0hjps7L.jpg) ## Customer Reviews ### ā­ā­ā­ā­ā­ Great product *by A***N on May 16, 2025* Worked well for me. ### ā­ā­ā­ā­ā­ Works great *by R***V on July 27, 2024* I use the weld through primer when I gave body sheet metal that will be welded together with plug welds. It's just extra insurance against rust through of the new panels in years to come. Though I no longer work professionally, when I did, SEM products never let me down. Price wise, it's sort of middle of the road, but I don't trust using the less expensive brands that contain a smaller percentage of the rust proofing ingredients and have less electrical conductivity which makes getting a good weld more difficult. ### ā­ā­ā­ā­ā­ It works *by M***S on February 24, 2025* Works great --- ## Why Shop on Desertcart? - šŸ›’ **Trusted by 1.3+ Million Shoppers** ā€” Serving international shoppers since 2016 - šŸŒ **Shop Globally** ā€” Access 737+ million products across 21 categories - šŸ’° **No Hidden Fees** ā€” All customs, duties, and taxes included in the price - šŸ”„ **15-Day Free Returns** ā€” Hassle-free returns (30 days for PRO members) - šŸ”’ **Secure Payments** ā€” Trusted payment options with buyer protection - ā­ **TrustPilot Rated 4.5/5** ā€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.eg/products/103791360-40773-zinc-based-weld-thru-primer](https://www.desertcart.com.eg/products/103791360-40773-zinc-based-weld-thru-primer) --- *Product available on Desertcart Egypt* *Store origin: EG* *Last updated: 2026-07-28*