perma CLASSIC can be used for all applications with ambient temperatures of 0 to +40 °C. The reliable operating principle is based on an electrochemical reaction. The lubrication period is determined by color coded activator screws. Depending on your application's requirement, you may chose to discharge 120 cm³ in a period of 1, 3, 6 or 12 months. The activator screw generates pressure (max. 4 bar) which moves the piston forward and continuously injects small lubricant amounts into the lubrication point. perma CLASSIC is fully dust and water proof and can withstand impacts and accidental knocks.