Basic Parameters
1. Appearance: Light yellow transparent low-viscosity liquid
2. Working Mechanism: One-component solvent-based surface primer. Forms dry film after solvent volatilization at room temperature to improve surface energy of low-surface-energy substrates and boost adhesion of cyanoacrylate instant adhesives. No heat curing required.
3. Packaging Specification: 100ml per bottle
4. Order Code: 174801
5. Brand Attribute: TONSAN (sub-brand of H.B.Fuller USA), equivalent to Loctite 748 primer, specially used as adhesion promoter for PP, PE and EPDM rubber.
Core Product Features
1. Activate inert hard-to-bond substrates to solve weak bonding problem
Designed for low-surface-energy materials including PP, PE, EPDM rubber and silicone rubber. It dramatically improves bonding strength of instant adhesives like 1406 and 1495, effectively preventing debonding and insufficient adhesion.
2. Easy application & fast solvent evaporation
Apply a thin coat with a brush. Solvent evaporates rapidly at room temperature, ready for adhesive application after 1–3 minutes air-drying. Suitable for both manual operation and automatic production lines.
3. Ultra-thin film without affecting fitting tolerance
Only a thin uniform layer is needed. The extremely thin dry film will not change workpiece dimensions, ideal for precision electronic parts and tiny rubber sealing components.
4. Wide compatibility with all TONSAN instant adhesives
Fully matched with TONSAN 1401, 1406, 1495, 1496 cyanoacrylate adhesives and most general-purpose super glues, simplifying factory adhesive inventory management.
5. Non-corrosive & stable weather resistance
The primer film resists mild moisture, will not cause stress cracking on plastics or swelling degradation on rubber, no blooming or corrosion on visible finished parts.
Application Scenarios
1. Plastic bonding: Surface activation for PP/PE plastic housings, buckles and inert plastic parts before instant adhesive bonding;
2. Rubber product assembly: Adhesion promotion for EPDM sealing strips, silicone gaskets, rubber O-rings and flexible rubber fittings;
3. Precision electronics assembly: Pre-treatment for headphone rubber parts, plastic casings and waterproof rubber rings;
4. Industrial maintenance: Surface priming for broken inert plastic and hard-to-adhere rubber repairs to strengthen bonding durability.
Our experienced engineers and technical specialists are here to provide professional guidance, product selection, and application support tailored to your specific requirements.
