Novol Cobra Hardener (200ml) – The Essential Catalyst for Cobra 2K
The Novol Cobra Hardener is the dedicated 200ml activator required to trigger the chemical curing process of Novol Cobra Multi-Purpose Protective Coating. This hardener is formulated specifically for the 600ml Cobra Black or Tintable bottles, creating a high-performance 2K polyurethane system that is vastly superior to 1K aerosols in terms of chemical, mechanical, and UV resistance.
Without this hardener, the Cobra coating will remain a liquid and will not provide any protective properties.
The Perfect Mix: 3:1 Ratio
This 200ml hardener is precisely measured to pair with a 600ml unit of Cobra coating.
- Mixing Ratio: 3:1 (3 parts Cobra Coating: 1 part Hardener).
- Convenience: The 600ml Cobra coating is sold in an 800ml-capacity bottle, allowing you to pour this entire 200ml hardener directly into the coating bottle for effortless mixing.
Key Features & Benefits
- Chemical Cross-Linking: Triggers a reaction that transforms the liquid resin into a rock-hard, scratch-resistant polyurethane shield.
- High Humidity Resistance: Formulated to perform reliably in various workshop environments.
- UV Stability: Works in tandem with the Cobra resins to ensure the finished surface does not "chalk" or grey out when exposed to sunlight.
- Optimized Pot Life: Provides approximately 45–60 minutes of working time at 20°C, giving you ample time to spray complex areas like truck beds or chassis.
- Rapid Initial Set: Helps the coating reach a "touch dry" state in about 3 hours, reducing the time the wet surface is vulnerable to dust.
Professional Mixing Strategy
To ensure your Cobra coating reaches its maximum "tough-as-nails" potential:
- Shake the Coating First: Vigorously shake the 600ml Cobra bottle for 2 minutes before adding the hardener.
- Pour: Add the entire 200ml of Hardener into the Cobra bottle.
- Shake: Close the lid and shake the combined mixture vigorously for another 2 minutes to ensure total homogenization.
- Nozzle Prep: Attach your UBS (Schutz) spray gun directly to the bottle and begin spraying immediately.
Expert Insight: Hardener is highly sensitive to air. If you are only using a portion of the hardener, ensure the cap is replaced instantly and tightened firmly. Moisture in the air will cause the hardener to crystallize and lose its effectiveness.
