Servo Spark 3 is the lubricant which is used in processes like Electrical Discharge Machining (EDM), EDM is the constructive cutting or fabrication of metals to form various shapes, it is also called as Spark erosion machining. Spark 3 has very low odor just like pure water is, which makes it extremely user friend to work with. It also has great Flash point, the temperature at which this lubricant will catch fire is 110 degree C. It also has high dielectric strength just like Servo Electra and Power oil by Apar, although I am not marketing the products of Apar, It still is a brand in the market. IEC 60243 is a standard referred to for a method of testing dielectric strength of a material. It also has excellent filterability.
| Appearance | Clear liquid |
| Kinematic Viscosity @ 40 Deg C, cSt | 3.0 – 4.0 |
| Flash point (COC), °C Min. | 110 |
| Acid Number, mg/KOH gm, Max | 0.05 |
| Density @ 29.5 deg. C, in gm/ml | 0.824 |