W4 is a water-miscible coolant – a universal product for general machining. Water-miscible coolant. Special mineral oil fractions, emulsifiers, high-pressure additives, bactericides. Boron-free. Suitable for machining ferrous materials with machine tools. The product forms a finely dispersed emulsion with excellent cooling and flushing properties. Biostable and low foaming.

Ferrous materials: 4 – 10 %
Non-ferrous metals: 4 – 6 %