Fluid Film BLACK aerosol 12-can kit with DU-MOST 24-inch hose — long-lasting corrosion protection, penetrant lubricant

Fluid Film BLACK aerosol is a long-lasting, wool-wax based penetrant and lubricant that protects metal from corrosion while lubricating moving parts.

Designed for marine, automotive, snow-handling and general maintenance use, this 12-can set of 11.75 oz sprayable Fluid Film BLACK includes a DU-MOST 24" flexible extension hose with a 360-degree nozzle to reach tight seams, hinges and undersides. The formula is a thixotropic, non-solvent blend that creeps into crevices, displaces moisture and leaves a soft, black protective film that resists salt, brine and moisture. It’s widely applied to chassis undercoatings, marine rig components, garage and garden equipment, and frozen or seized fasteners.

How does Fluid Film BLACK stop rust and protect metal?

The coating flows into tiny gaps and bonds to metal surfaces, creating a moisture-displacing barrier that slows oxidation. Its thixotropic nature helps the product cling to vertical and overhead surfaces without running, preserving protection where you need it most.

• Wool-wax and refined oils form a water-shedding film
• Migrates into seams, welds and threaded connections
• Reduces further corrosion by excluding salts and moisture
• Leaves a durable black finish for chassis and undercoats

Will this aerosol loosen frozen bolts, hinges and stuck parts?

Yes — Fluid Film BLACK acts as a penetrant to seep into corroded joints, helping to free seized fasteners and revive sluggish mechanisms. Regular application can also prevent parts from fuse-locking in place over time.

• Penetrates rusted nuts, bolts and shafts to aid removal
• Restores movement to hinges, locks and sliding tracks
• Safe for reuse on electrically connected parts when applied carefully
• Non-flammable and non-toxic formula reduces handling hazards

How do I use the DU-MOST 24" extension hose and 360° nozzle?

The included DU-MOST hose slips onto the aerosol outlet to let you spray into confined and awkward spots without dismantling components. Rotate the 360-degree nozzle to direct the spray precisely and coat hidden seams, undercarriages and inside voids.

• Attach hose to can valve, aim into tight seams and press the actuator
• Use nozzle rotation to reach overhead or inverted areas
• Apply a light wet coat; allow film to settle into crevices
• Reapply periodically in high-salt or high-moisture environments

How long will the protection last and where is it best applied?

Longevity depends on exposure; in marine or salted-road conditions it endures longer than simple sprays because the gel migrates and repairs thin spots. It is ideal for chassis undercoating, marine rigging, farm implements and any equipment stored outdoors or used in corrosive environments.

• Provides extended protection on vehicle frames and underbodies
• Used on marine hardware, wire rope and rudder interiors
• Recommended for garden tools, door tracks, chains and hinges
• Works well for preservation during storage and shipping

Who is this for? Fluid Film BLACK with the DU-MOST extension is intended for mechanics, fleet operators, mariners, farmers and homeowners who need a versatile, durable corrosion inhibitor and lubricant. If you maintain vehicles, boats, outdoor equipment or facilities exposed to salt and moisture—and you want a penetrant that clings, creeps and protects rather than evaporating quickly—this aerosol kit lets you reach difficult spots and apply a lasting, water-displacing film.