CRC 5-56 Multi-Purpose Penetrating Oil Spray – Rust Loosener, Lubricant and Water Displacer Aerosol

CRC 5-56 Multi-Purpose Service Spray is a penetrating lubricant and corrosion protection fluid designed for maintenance, repair, and mechanical servicing applications. The formulation is based on paraffinic oil combined with organic corrosion inhibitors that form a thin protective barrier on metal surfaces to protect against moisture, oxygen, and environmental corrosion.
This multi-functional maintenance spray penetrates quickly into narrow gaps, threads, and surface pores to loosen rusted fasteners, seized components, and stuck mechanical assemblies. The lubricating film reduces friction and restores smooth movement in hinges, locks, sliding mechanisms, and rotating parts.
CRC 5-56 also functions as an effective water-displacing spray, removing moisture from electrical contacts and ignition components. This capability helps restore electrical continuity and allows engines or equipment exposed to water to restart reliably. After application, the product leaves a thin protective film that prevents corrosion caused by humidity and aggressive atmospheric conditions.
Typical applications include maintenance of automotive components, electrical connections, mechanical assemblies, tools, and industrial equipment. The product is widely used in workshops, garages, factories, construction sites, and household maintenance tasks.
The aerosol packaging features a 360° spray valve and extension tube, allowing precise application even in difficult-to-reach areas. CRC 5-56 provides versatile lubrication, rust protection, and penetrating performance for a wide range of repair and maintenance operations.
Key Selection Proof Points
Chemical type: Paraffinic oil with organic corrosion inhibitors
Appearance: Light amber clear liquid
Specific gravity: 0.82 (20°C)
Flash point: 78 °C (closed cup)
Freezing point: < −50 °C Surface tension: 22 mN/m Performance characteristics: • Water displacement capability: 70% • Ultimate film thickness: 1–2 µm • Maximum coverage: 100 m²/L • Dynamic viscosity (40°C): 26 mPa·s • Load wear index: 930 N Key functions: penetrating oil, rust loosener, water displacer, corrosion protection, light lubrication Typical applications: electrical contacts, automotive components, bolts and nuts, door hinges, sliding mechanisms, tools, mechanical equipment maintenance