LOCTITE® 640 is a green, anaerobic, low viscosity, methacrylate ester-based retaining compound ideal for parts requiring a longer positioning time. Fixturing time on steel is 2 h. Also used for active metals such as brass. This is a high strength product with good temperature resistance. Max. diametrical clearance is 0.1 mm and service temperature is -55 to +175ºC. Fluorescence allows product presence to be monitored.
- 1-part product, requires no mixing
- Slow curing
- Ideal for large diameter components
- High strength
- Also for active metals such as brass
- Good temperature resistance
Technical Details
| Viscosity, Falling Ball ‘D’ @ 25.0 °C | 450.0 mPa·s (cP) – 750.0 mPa·s (cP) |
| Shear strength | 22.0 N/mm² |
| Fixture time | 2.0 hr. |
| Color | Green |
| Recommended for use with | Metal: Steel |
| Diametrical clearance | < 0.1 mm |
| Chemical basis / base | Methacrylate |
| Product Type | Retaining compounds,Industrial adhesives |
| Technology Names | Acrylates,Acrylates, anaerobic cure |
