Sikaflex®-529 AT
Sikaflex®-529 AT is a sprayable, 1-component Silane Terminated Polymer (STP) sealant that cures upon exposure to atmospheric humidity. It is specifically designed for seam sealing and lap joints in vehicle body assemblies, offering a factory-like appearance and surface structure.
Key Features
Isocyanate-Free: Contains no isocyanates, making it safer for users.
Solvent-Free: Free from solvents, reducing health and environmental risks.
Silicone & PVC-Free: Ensures compatibility with various substrates and coatings.
Excellent Adhesion: Adheres well to metals, painted plastics, and plastic substrates commonly used in body shops.
Non-Sag Properties: Maintains its position during application, even on vertical surfaces.
Overpaintable: Compatible with water-based paint systems, allowing for seamless integration with vehicle finishes.
Low Odor: Provides a more pleasant working environment.
Good Acoustic and Damping Properties: Reduces noise and vibration, enhancing vehicle comfort.
Easy Application: Can be applied using manual, pneumatic, or electric-driven piston guns. For spray application, Sika® Spray Gun (cartridge) or Jetflow Gun (Unipac) are recommended.
Technical Specifications
Curing Mechanism: Cures upon exposure to atmospheric humidity.
Application Temperature Range: 5°C to 40°C; optimal between 15°C and 25°C.
Skin Time: Tooling and finishing should be carried out within the skin time of the sealant.
Surface Preparation: Surfaces must be clean, dry, and free from grease, oil, and dust.
Removal: Uncured Sikaflex®-529 AT can be removed from tools and equipment with Sika® Remover-208 or another suitable solvent. Once cured, the material can only be removed mechanically.
Applications
Seam Sealing: Ideal for sealing seams and lap joints in vehicle body assemblies.
Collision Repair: Restores original structures and surface appearance during vehicle repairs.
Stone Chip Protection: Enhances resistance against stone chips and other environmental impacts on the vehicle body.
Safety & Handling
Personal Protective Equipment (PPE): It is recommended to wear appropriate PPE, including gloves and eye protection, during application.
Ventilation: Ensure adequate ventilation in the work area to minimize inhalation exposure.
Storage: Store in a cool, dry place away from direct sunlight and sources of heat.
Shelf Life: Refer to the product's Safety Data Sheet (SDS) for specific shelf life information
