|Chemical Basis / Base||Methacrylate|
|Diametrical Clearance (Maximum)||0.1 mm|
|Fixture Time||2 hr.|
|Fixture Time Temperature||2 °C|
|Shear Strength||22 N/mm²|
|Viscosity||450 - 750 mPa.s (cP) Brookfield|
High strength, methacrylate ester-based retaining compound that is slow curing; ideal for large diameter components and active metals such as brass.
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.