Fluid Film Black anti-rust coating & lubricant — 5 Gallon non-aerosol marine-grade corrosion protection

Fluid Film Black is a non-toxic, thixotropic penetrant and lubricant that creates a long-lasting wet barrier to protect metal from corrosion while restoring a rich black finish.

Designed for heavy-duty marine, automotive and industrial environments, Fluid Film Black is a versatile anti-rust coating, penetrant and lubricant in one 5-gallon package. Its migrating wet barrier seeps into tight seams, threads and crevices to displace moisture and salt, lubricate moving parts and slow oxidation on a wide range of metal surfaces. Because it remains soft and gel-like, it clings to vertical surfaces and shields components exposed to brine, snow, and harsh weather without harsh solvents or flammable carriers.

How does Fluid Film Black protect metal in marine and snowy climates?

Fluid Film Black forms a wet, low-volatility layer that migrates into seams and crannies to block salt and moisture contact. That persistent barrier slows further rusting and keeps electrical contacts and moving parts operating longer in corrosive settings.

• Penetrates seams, threads and welded joins to displace moisture
• Clings to vertical and overhead surfaces without running off
• Effective against saltwater, road salts and humid air exposure
• Safe for use on electrical contacts when applied sparingly

Can it free seized or rust-frozen parts and still lubricate moving components?

Yes—Fluid Film Black works as a penetrant to loosen corroded fasteners and as a long-lasting lubricant to reduce friction. Its creeping action helps salvage frozen nuts, bolts and shafts, while the soft gel lubricates hinges, tracks and chains without drying to a brittle film.

• Soft gel consistency seeps into corroded threads and joints
• Helps release frozen bolts, hinges and shafts when given time to work
• Provides ongoing lubrication for locks, seat tracks and chains
• Non-flammable and non-toxic for safer maintenance use

Where is Fluid Film Black best used around the home, shop and fleet?

Its versatility makes Fluid Film Black suitable for household maintenance, marine hardware, agricultural machinery, automotive undercoating and industrial equipment preservation. Apply it wherever metal needs long-term protection, rust rescue or durable lubrication.

• Automotive undercarriages, door hinges, trunk latches and battery terminals
• Marine wire rope, void tanks, rudder interiors and deck fittings
• Lawn and garden tools, mower hardware, hedge trimmers and spreaders
• Industrial storage, shipping protection and agricultural applicators

How should I apply and maintain Fluid Film Black for best results?

Apply from a brush, pump sprayer or dip method depending on the surface size. Clean heavy grime first, allow the product time to migrate into seams, and reapply periodically in high-exposure environments to maintain the wet protective barrier.

• Clean loose rust and heavy contaminants before application
• Use brush or pump sprayer for even coverage on chassis and frames
• Allow several hours for migration into tight seams and threads
• Touch-up annually or after prolonged salt exposure for continuous protection

Who is this for? Fluid Film Black 5-gallon is aimed at professionals and serious DIYers who need a dependable, non-toxic corrosion preventive for boats, fleet vehicles, off-road and winter equipment, agricultural machines and industrial metal storage. It suits maintenance crews, mechanics, farmers and boat owners who prioritize long-lasting protection, salvage capabilities for corroded parts and a lubricant that stays soft and effective in harsh environments.