LOCTITE AA F246 + LOCTITE SF INI5 – "No-Mix" 2K Acrylic Structural Adhesive Set (50 ml)

Product Description

The LOCTITE AA F246 + LOCTITE SF INI5 set combines the high-performance, toughened structural adhesive LOCTITE AA F246 with the matching activator LOCTITE SF INI5.

The "no-mix" system enables simple, clean processing: The activator is applied to one surface, the adhesive to the other. Curing only begins when the components are joined. This eliminates the need for manual mixing of the components, saving time and ensuring consistently high processing quality.

LOCTITE AA F246 cures quickly at room temperature, is impact-modified, and offers excellent temperature and chemical resistance. Its high viscosity makes it suitable for vertical applications and uneven joints.

Product properties

• Technology: Modified Methyl Methacrylate Ester (MMA)
• Colour (F246, unhardened): Light yellow to brown
• Viscosity (F246): 17–35 Pa·s at 25 °C
• System: Two-component ("No-Mix") – activator and adhesive separate
• Activator: LOCTITE® SF INI5 (amber)
• Fixing time: ≤ 5 minutes (with INI5, for steel/PVC)
• Shear strength (after 168 h @ 22 °C, INI5):
• • Steel, blasted: 33 N/mm²
  • Stainless steel: 16 N/mm²
  • Aluminium: 19 N/mm²
  • ABS: 6.1 N/mm²
  • PVC: 11 N/mm²
  • Polycarbonate: 4.6 N/mm²
  • PMMA: 5.1 N/mm²
• Temperature resistance: up to 150 °C (short-term)
• Chemical resistance: Resistant to motor oil, ATF, salt solutions, moisture, diluted acids and alkalis

Suitable materials

• Steel and stainless steel
• Aluminum
• ABS
• PVC
• Polycarbonate*
• PMMA (acrylic glass)*

* Check compatibility beforehand.

Typical application areas

• High-strength structural bonding in metal and plastics construction
• Equipment and apparatus construction
• Vehicle and transport technology
• Repairs and retrofits
• Bonds with high requirements for impact and peel strength
• Applications with different material pairings

Processing instructions

1. Keep bonding surfaces clean, dry, and free of grease.
2. Apply activator (INI5) thinly to one adhesive surface, adhesive (F246) to the other.
3. For larger gaps (up to 0.5 mm), apply activator to both surfaces.
4. Add parts within 15 minutes (with single-sided activation).
5. Remove excess adhesive with an organic solvent before it hardens.
6. Hold the connection in place until the adhesive has set (typically a few minutes).
7. Final strength is reached after 24–72 hours, depending on the gap, material and temperature.