RD90 Industrial Foam Rust Penetrant | Net Wt: 11 oz

Seized bolts and corroded fasteners cost your shop time and risk broken parts — RD90 Industrial Foam Rust Penetrant clings to the joint, works its way into threads, and frees rusted, corroded, or seized parts without the guesswork of a standard spray penetrant.

• Size: 11 oz. aerosol can, sold in quantities of 12 (not sold individually)
• Foaming formula clings to vertical and overhead surfaces instead of running off
• Frees seized, rusted, and corroded parts
• Retards further rust formation and lubricates moving parts
• Displaces moisture from electrical and mechanical connections
• Silicone-free — safe on paint, plastic, rubber, and fabric
• Non-conductive, making it safe near electrical components

What makes a foam penetrant better than a liquid spray on vertical surfaces? A foaming formula clings to the joint instead of dripping away, giving the penetrant more contact time to work into rusted threads — especially useful on vertical bolts, overhead fasteners, and hard-to-reach fittings.