These electrical contact cleaners prevent electrical failures caused by water moisture and dirt they improve resistance values & electrical properties stop electrical leakages arcing & short circuits provide excellent electrical protection under high humidity the contact cleaners can be safely used on live currents up to 440 v they are ideal for aviation ships oil rigs motors dc motor cummutators control boards they are non toxic by skin penetration and does not contain coetaneous sensitisers or carbon tetra chloride and are availbale in 420 gms/350 ml aerosol and 5 ltrs polycans