LOCTITE® 640 is an anaerobic shaft-bushing retainer of green color, with low viscosity, based on dimethacrylate ester, ideal for parts requiring a longer positioning time. The fixation time on steel is 2 hours. It is also used for active metals, for example, brass. It is a high-strength product with good heat resistance. The maximum diameter gap is 0.1 mm, and the operating temperature is from -55 to +175ºC. Fluorescence allows you to control the presence of the product.
- Slow polymerization
- Ideal for large diameter parts
- High strength
- High temperature resistance