Servo Vacuum VM 4 is a high quality product.It has high thermal stability and low vapour pressure (1×10-6 mm of Hg at 200C). It is used for high vacuum producing diffusion pumps. It fulfills GOST:23013-78 specification for vacuum pump oil. It is recommended to use in vaccum producing diffusion pumps. It ensures constant vaccum and is one of the best productions of IOCL.
Equivalents :
- Mobil : Vacuum Pump 100
- Castrol : AIRCOL HV 100
- Shell : Vacuum Pump Oil S2 R 100
- HP : HYCOM VDL T 100
| Kinematic Viscosity cSt @ 50°C | 47–58 |
| Viscosity Index, Min. | 95 |
| Pour point °C Max. | (-) 15 |
| Flash point (COC), °C Min. | 230 |
