Pettit Rustlok Steel Primer 6980 – Moisture-Cured Anti-Corrosion Primer for Marine Metal Surfaces

Product Overview

Pettit Rustlok Steel Primer 6980 is a high-performance, moisture-cured polyurethane primer designed to protect steel and cast-iron marine components from corrosion and moisture damage. Engineered for demanding marine environments, Rustlok forms a tough, water-impervious barrier that delivers exceptional adhesion—even over tightly adhered rust—making it ideal for boat hulls, trailers, hardware, and other metal surfaces exposed to harsh saltwater conditions.

Whether you’re restoring marine hardware, prepping a steel hull, or protecting structural components, Rustlok provides long-lasting corrosion resistance and a professional foundation for topcoats.

Key Features

• Moisture-cured polyurethane formula – Provides durable corrosion protection on steel and cast iron surfaces.

• Exceptional adhesion – Bonds to steel, cast iron, galvanized, and stainless steel surfaces.

• Applies over firmly adhered rust – Wets and seals rusted areas for easier restoration.

• Water-impervious barrier – Prevents moisture penetration and corrosion.

• Fast drying – Allows multiple coats in one day to speed up projects.

• Cold-weather application – Can be applied in temperatures as low as 10°F.

Ideal Applications

Rustlok 6980 is perfect for marine and industrial metal surfaces such as:

• Steel boat hulls and keels

• Outboard brackets and jack plates

• Trailers and marine hardware

• Pumps, brackets, and structural steel parts

• Fuel tanks, railings, and metal supports

Why Use Rustlok Before Painting?

Rustlok not only stops corrosion—it also creates a strong foundation for antifouling paints or topcoats. Its polyurethane chemistry provides excellent wetting and sealing ability, ensuring coatings last longer in harsh marine environments.

Application Tips

• Remove loose rust, grease, and contaminants before applying.

• Apply by brush, roller, or spray.

• Multiple coats can be applied the same day due to fast drying.

• Follow with compatible marine topcoat or antifouling paint for best results.

Technical Details

• Product Type: Moisture-cured polyurethane primer

• Color: Silver

• Surface Compatibility: Steel, cast iron, galvanized, stainless steel

• Use Location: Above or below waterline metal surfaces

• Temperature Range: Apply down to 10°F

• Finish: Corrosion-resistant base coat