Easto quenching oils from eastern petroleum are blended from high viscosity index base stocks having good oxidation stability, good fluidity and low volatility. There are five grades available to meet specific requirements. Some of these grades contain selected polar compound or special additives. These oils have excellent heat transfer properties, good welting properties and provide structural hardness to components. Recommended for quenching of nuts, bolts, screws, high-speed tools, ball bearings, gears, the quenching oils meet bis:2664-1980 specification [additive type, straight mineral type, straight mineral type, medium/heavy is:4543-1977 specifications].
