Würth Rost Off Blue Ice is a high-performance rust remover and penetrating spray with an extreme cooling effect for loosening heavily rusted and seized threaded connections, supplied here as a pack of 3 x 400ml aerosol cans.
Rost Off Blue Ice combines strong penetrating action with rapid cooling to help release stubborn corroded nuts, bolts and other threaded connections. Spraying the fastener at close range cools the material surface to approximately -45°C, producing micro-fine cracks in the corrosion layer so the active ingredient can penetrate more effectively.
Product Specifications
- Brand: Würth
- Product: Rost Off Blue Ice
- Würth article number: 0893241
- Product type: Rust remover / penetrating spray
- Container: Aerosol can
- Container size: 400ml
- Quantity supplied: 3 cans
- Total quantity: 1.2 litres
- Chemical basis: Mineral oil
- Application temperature range: -10°C to +40°C
- Cooling effect: Down to approximately -45°C
- Visual cold indicator: Sprayed area turns blue from approximately -5°C
- Silicone-free: Yes
- Acid-free: Yes
- Resin-free: Yes
- AOX-free: Yes
- Shelf life from production: 24 months
Key Features
- Extreme cooling helps crack open the corrosion layer
- Excellent creeping and penetrating properties
- Helps release heavily rusted and seized threaded connections
- Visual blue cold indicator shows when the required cooling effect has been achieved
- Contains corrosion-protection additives for continued protection after use
- Resin-free, acid-free and silicone-free
- Compatible with rubber and seals when used correctly
Typical Uses
- Seized nuts and bolts
- Heavily corroded threaded fasteners
- Automotive suspension and chassis fixings
- Brake and mechanical repair work
- Exhaust and underbody fasteners where components are cool enough for safe application
- Workshop dismantling and repair work
- Commercial vehicle, agricultural and machinery maintenance
How to Use
Remove as much loose contamination as possible and shake the can before use. Spray the seized fastener from very close range until the treated area turns blue. Allow the product to penetrate before attempting removal. Repeat the application on particularly stubborn connections where necessary.
Important Application Note
Remove overspray from sensitive or painted surfaces promptly. This is an extremely flammable pressurised aerosol, so use only with suitable ventilation and keep away from heat, sparks, flames and other ignition sources. Do not apply to hot components.
What's in the Box?
- 3 x Würth Rost Off Blue Ice Rust Remover 400ml aerosol cans
Why Würth?
Würth professional workshop chemicals are developed for demanding automotive, engineering and trade applications. Rost Off Blue Ice combines penetrating action, corrosion protection and an extreme cooling effect to provide a particularly useful solution when conventional penetrating sprays struggle with heavily seized fasteners.
| Model | Generation (Mk) | Sub-variant | Year Range | Engine | Transmission |
|---|
No specific vehicle compatibility – universal workshop / maintenance product.
| Manufacturer | OE / Reference Number |
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No applicable vehicle manufacturer OE reference – universal workshop / maintenance product.