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1K Zinc Weld-Thru Primer (500 mL) - SprayMax

Part #: 3680251

The SprayMax 1K Zinc Weld-Thru Primer (Model: 3680251) provides robust corrosion protection for metal surfaces prior to welding. This single-component primer is engineered for professional automotive and industrial applications, allowing for direct welding without compromising weld integrity or promoting excessive spatter. It delivers a high concentration of zinc, ensuring exceptional rust prevention even in demanding environments.

Key Features

  • Advanced Corrosion Protection: Formulated with a high zinc content, offering superior long-term rust and corrosion resistance to treated metal surfaces.
  • Weld-Thru Capability: Designed to be welded directly over, minimizing spatter and porosity while maintaining strong, clean welds.
  • Single-Component (1K) Formula: Ready-to-use aerosol application requires no mixing, streamlining the preparation process for technicians.
  • Excellent Adhesion: Bonds effectively to various metal substrates, providing a durable and consistent foundation for subsequent coatings or welding.
  • Professional Grade: Developed for high-demand environments in body shops, fabrication facilities, and repair centers.
  • Convenient 500 mL Aerosol: Ensures easy and precise application for targeted coverage.

Applications

This primer is an essential tool for professional technicians engaged in automotive collision repair, restoration projects, and general metal fabrication. It is ideal for use on bare metal seams, patch panels, and structural components where welding is required and long-term corrosion prevention is critical. Common uses include door skins, quarter panels, frame sections, and other areas exposed to moisture and environmental elements across a range of vehicles.

We have 370 in stock
List: $34.52 Save: $8.05

$26.47

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  • Model: 465584
  • Shipping Weight: 1.26lbs
  • Manufacturers Part #: 3680251
  • Manufactured by: SprayMax
  • Also Known As: SMX3680251, SPM-3680251

This product was added to our catalog on Tuesday 16 June, 2026.