Item Name: LOCTITE® 403™
Manufacturer: Henkel
Technologies: Alkoxyethyl cyanoacrylate (low odor, low blooming)
Color: Transparent, colorless to pale yellow liquid
Cure Type: Humidity cure
Package Size: Contact to Techniq VN for details.
Shelf Life: Contact to Techniq VN for details.
LOCTITE® 403™ is a high-viscosity, alkoxyethyl cyanoacrylate adhesive designed for low odor and low blooming applications. It cures rapidly in the presence of ambient moisture, producing transparent bonds. This formulation is well-suited for environments where vapor control is challenging. It delivers strong adhesion to a wide range of substrates, including metals, plastics, elastomers, and porous materials such as wood, paper, leather, and fabric.
Rapid bonding of metals, plastics, and elastomers.
Effective for porous/absorbent substrates such as paper, wood, leather, and textiles.
Suitable where low odor and minimal blooming are required.
Used in assemblies where fast fixture times are critical (e.g., electronics, consumer goods, precision parts).
| Property | Still Not Mixed (Uncured) | After Mixed/Cured |
|---|---|---|
| Appearance | Transparent, colorless to pale yellow liquid | Clear solid bond |
| Components | One part, no mixing | – |
| Viscosity @ 25 °C (Cone & Plate, mPa·s) | 900–1,500 | – |
| Viscosity @ 25 °C (Brookfield LVF, mPa·s) | 1,100–1,650 | – |
| Specific Gravity | 1.1 | – |
| Cure Mechanism | Humidity-activated | Full cure within 24–72 h |
| Fixture Time (22 °C, 50% RH) | Steel: 20–45 s; Aluminum: 5–20 s; ABS: 5–10 s; PVC: 45–75 s; Paper: <5 s | – |
| Tensile Strength (ISO 6922) | ≥4.5 N/mm² after 10 s | 30 N/mm² (steel, 24 h) |
| Lap Shear Strength (after 72 h, 22 °C) | – | Steel: 20.3 N/mm²; ABS: 8.6 N/mm²; Polycarbonate: 6 N/mm² |
| Operating Conditions | Optimal humidity: 40–60% RH at 22 °C | Retains strength under heat, solvents, and humidity |
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