3M 08852 - Cavity Wax Plus (18oz)

3M 08852 Cavity Wax Plus (18 oz) is a professional-grade corrosion protection coating designed to shield internal body cavities, seams, and structural areas from moisture and rust. This advanced cavity wax is formulated to provide long-lasting protection on hard-to-reach surfaces found in rocker panels, pillars, frame rails, and other enclosed automotive cavities, helping restore or improve OEM-style corrosion resistance after collision repair or restoration work.

The semi-solid, tapered applicator straw allows for precise placement and deep coverage in tight gaps and internal panel spaces. Once applied, the product resists dripping and sagging, creating a protective coating that helps block water, salt, and contaminants from reaching bare metal surfaces.

Key Features

• 18 oz Aerosol Can: Convenient size for shop use and cavity applications
• Advanced Corrosion Protection: Helps safeguard internal cavities against rust and moisture
• Semi-Solid Wax Formula: Resists dripping and sagging for controlled application
• Deep Cavity Penetration: Designed for use in rocker panels, pillars, frame rails, and other enclosed areas
• Automotive Ready: Suitable for collision repair, restoration, and preventive maintenance
• Professional Grade: Trusted in body shop and refinishing workflows