Colourless, transparent, instant light-cure universal acrylic-based adhesive. For stress-sensitive plastics with high, on-demand, curing speed. LOCTITE® AA 3301 is a transparent, colourless, light-cured, universal, acrylic-based instant adhesive, suitable for metals and stress-sensitive plastics with a high, on-demand, curing speed. Depth of cure is >13 mm. Tack free time >30 secs. Fixturing time is 12 secs. Shore hardness: D 69. Viscosity 160 mPa·s.