Plastic Gap Filler Glues

SI Blue is a standard thin-medium viscosity suitable for general bonding tasks. SI Black is thicker, providing greater control for precision or overhead applications. SI Green is ultra-thin and specifically formulated for penetrating and repairing hairline cracks where other viscosities cannot reach.

Yes, for hard-to-bond polymers such as PTFE, HDPE, nylon, and polypropylene, Poly Prep is an essential surface preparation step. It chemically etches the surface to create the right texture for a permanent bond. Skipping this step can significantly reduce bond strength on low surface energy plastics.

Yes. Tech-Bond's Filler — a silica sand compound — forms a rock-hard mass when mixed with the bonding agent. Once fully cured, it can be drilled, tapped, sanded, and painted, making it ideal for structural repairs where the restored surface must be finished or machined to specification.

The Professional Kit is recommended for industrial and engineering applications. It includes the SI Bonding Agent (choice of Blue, Black, or Green), Poly Prep, Activator/Accelerator, Filler, and a Debonder for controlled removal. The Deluxe Kit is also suited for technicians requiring a comprehensive repair system in a single package.

All Tech-Bond bonding agents and kits should be stored in a refrigerator to achieve the longest possible shelf life. Before use, simply bring the product back to room temperature. This refrigerator storage recommendation applies to all viscosity variants — SI Blue, SI Black, and SI Green.

Yes. Tech-Bond Global offers volume pricing across multiple product lines. The Poly Kits range from $29.95 to $1,279.95, and Professional Kits scale up to $1,784.95 for larger quantities. Poly Prep and the Filler compound are also available in multi-pack options (5-pack and 10-pack). Contact Tech-Bond Global directly for custom bulk pricing.