WD-40 Specialist WD40 Penetrating Spray – Fast Rust Release and Deep Penetration
The WD40 Specialist Penetrating Spray is designed to quickly loosen seized, rusted and corroded nuts, bolts and mechanical components. Its advanced low surface tension formula penetrates deep into tight spaces, helping release stubborn fasteners while reducing the effort required for maintenance and repair.
Key Benefits
- Fast-acting formula quickly penetrates rusted and seized components.
- Deep penetration reaches difficult-to-access areas with ease.
- Smart Straw applicator allows both wide-area spraying and precise application.
- 360° valve enables use in any position, even upside down.
- Displaces moisture to help restore smooth operation of moving parts.
- Helps prevent corrosion by protecting treated metal surfaces.
The WD40 Specialist formula is engineered with exceptionally low surface tension, allowing it to penetrate through rust, threads and tightly fitted metal parts. Its capillary action carries the lubricant into narrow gaps where conventional products cannot easily reach, making it ideal for automotive, workshop, industrial and maintenance applications.
Recommended Applications
- Loosening seized or rusted nuts, bolts and fasteners
- Freeing corroded mechanical parts and assemblies
- Lubricating hard-to-reach moving components
- Maintenance of automotive, industrial and workshop equipment
Technical Specifications
- Capacity: 250 ml
- Operating temperature: -20°C to +90°C
- Smart Straw precision applicator
- 360° spray valve for use in any orientation
Important Information
- Highly flammable aerosol.
- Always follow the safety instructions provided on the product label.
- Test on an inconspicuous area before use on sensitive surfaces.
- Store in a cool, dry place away from heat and direct sunlight.




