WD-40 Specialist Rust Remover Soak
Please note: this WD-40 product is currently not supplied or sold in Ukraine due to the manufacturer's range restrictions. This section is for information only, for those who want to better understand the global WD-40 range, follow the brand's innovations and see where modern technical products are heading.
If you are interested in new products, special formats and professional WD-40 solutions, follow the updates on our website and in the news section: that is where we will announce any expansion of the range in Ukraine.
Key feature: dissolves rust back to bare metal with no acids, scraping or fumes
WD-40 Specialist Rust Remover Soak removes rust without acids or caustic chemicals. Simply submerge the part: light rust in 30 minutes, medium rust overnight (8 hours), heavy rust up to 24 hours. The surface returns to clean bare metal ready to paint, without harming surrounding rubber, plastic and paint. The solution can be reused until it turns black.
What it does
- Removes rust back to bare metal
- No acids, caustics or toxic fumes
- Non-irritating to skin, zero VOC
- Safe on surrounding rubber, plastic and paint
- Reusable solution
Where to use
- Auto parts, trailers and hitches
- Tractors and farm equipment
- Antique restoration
- Rusty tools
- Cast iron, chrome, copper and brass
Technical data
WD-40 Specialist, 3.78 L
- Soak time
- 30 min light rust, 8 h medium, up to 24 h heavy
- Temperature
- room temperature or higher, much slower below +15 °C
- pH
- 6-8, acid-free
- VOC
- 0 %
- NSF category
- P1 (#146753)
- Restriction
- removes bluing and other oxide coatings, do not use on them
Data: manufacturer technical data sheet (TDS).
Manufacturer test results

Panel after 6 hours of salt exposure: left untreated, right after a 4-hour soak. WD-40 Company technical centre test.
How it differs from products we sell
To free a rusted bolt without removing the part we sell WD-40 Specialist Penetrant.