Sikagard®-6440
Sikagard®-6440 is a high-performance, rubber-based protective coating designed for underbody and stone chip protection in vehicles. It offers excellent corrosion resistance, sound damping, and impact protection, making it ideal for automotive applications.
Key Features
Chemical Base: Rubber-based formulation
Color Options: Black or grey
Cure Mechanism: Air-drying
Density (Uncured): 1.05 kg/L
Solid Content: 49%
Application Temperature: 15–25°C
Film Thickness:
- Wet: 600 µm
- Dry: 300 µm
Tack-Free Time: 60 minutes
Drying Time: 24 hours
Service Temperature: -30 to 90°C
Shelf Life: 24 months (stored between 5–25°C)
Applications
Sikagard®-6440 is suitable for spray application on various vehicle components, including:
- Underbody sections
- Wheel arches
- Door sills
- Front and rear aprons
It demonstrates strong adhesion to metals, metal primers, various paints, and PVC. The product is designed for use by experienced professionals, and compatibility tests with specific substrates are recommended.
Technical Specifications
Chemical Resistance: Resistant to water, seawater, salt spray, oil, bases, and acids
Overpaintability: Compatible with most conventional paint systems after 24 hours of drying
Texture Reproduction: Allows for easy replication of original factory textures
Flexibility: Remains flexible when dry, accommodating vehicle movements
Environmental Compliance: Free from heavy metals
Safety & Handling
Surface Preparation: Ensure surfaces are clean, dry, and free from rust, dust, and grease. Bare metal should be pre-treated to enhance corrosion resistance.
Application Method: Can be applied using air-mix guns with an air pressure of 3–6 bar.
Removal: Uncured Sikagard®-6440 can be removed from tools and equipment with Sika Remover-208. Once cured, the material can only be removed mechanically.
Safety Precautions: Use appropriate personal protective equipment (PPE) and ensure adequate ventilation during application.
