Filler Compounds & Filling Solutions

Yes. Once cured, Tech-Bond's silica sand filler compound forms a rock-hard mass that can be drilled, tapped, sanded, and painted. This makes it suitable for structural repairs where the filled area must be refinished or re-machined to meet original dimensional or surface requirements.

Apply the Bonding Agent to the prepared surface first, then sprinkle the filler compound over it. Repeat this layered application process to build up the repair area as needed. The filler works in conjunction with the bonding agent to create a reinforced, high-strength fill. Always use Poly Prep surface preparation before application for optimal adhesion.

The Professional Kit is designed for engineers, prototypers, and field professionals requiring precision bonding on challenging materials like Delrin, PTFE, HDPE, and composites. It includes a Debonder for controlled removal. The Deluxe Kit is optimized for maintenance technicians and repair tasks, offering the same core components — bonding agent, accelerator, Poly Prep, and filler — at a lower price point without the Debonder.

SI Blue is a thin-to-medium viscosity suitable for standard bonding tasks. SI Black is thick with high control, ideal for larger gaps or vertical surfaces. SI Green is ultra-thin and formulated specifically for hairline crack penetration. Select based on the crack size and material type. Product pages and Tech-Bond support can assist with specific application guidance.

For the longest shelf life, store kits — particularly those containing bonding agents — in a refrigerator and bring them to room temperature before use. Proper storage preserves the chemical integrity of the bonding agent and filler, ensuring consistent performance during application. Avoid exposure to excessive heat, direct sunlight, or humidity during storage.

Yes. Tech-Bond's filler kits and filling solutions are specifically designed for both field and shop use. They require no special equipment and can be deployed quickly in industrial, construction, and maintenance environments. The Tech Patch and Tech Wrap Kits extend this capability to emergency pipe and tank repair across metal and PVC systems.