Replacement Vacuum Pump Oil Manufacturer,Supplier and Exporter in India
Product Code : EL-MWLE-13092
Jlab Export is a leading Replacement Vacuum Pump Oil Manufacturer,and suppliers in India
Vacuum pump oil seals the small clearances between the vanes and the housing of a rotary vane vacuum pump and lubricates them. This replacement oil is a mineral oil with a kinematic viscosity of 41.4–50.6 mm²/s at 40 °C. Its viscosity index is 110 and its flash point 240 °C.
Specifications
| Oil type | Mineral oil |
| Kinematic viscosity at 40 °C | 41.4–50.6 mm²/s |
| Viscosity index | 110 |
| Flash point | 240 °C |
| Pour point | -10 °C |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 3–5 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
Practicals: Evacuating a Refrigeration Circuit
Before any system is charged, students pull a deep vacuum on it to remove air and moisture. A practical with the Small Vacuum Pumps or Fast Vacuum Pumps starts with the oil. Students check its level and colour, drain it if it is cloudy, and refill with fresh oil. They then evacuate a circuit and watch the reading fall on the Digital Manifolds, which include a vacuum sensor.
A useful comparison is to evacuate the same circuit twice, once with old cloudy oil and once with fresh oil. The fresh charge reaches a deeper vacuum and gets there faster, which shows students why the oil is changed so often.
Frequently Asked Questions
When should vacuum pump oil be changed?
Change it as soon as it looks cloudy, milky or dark, and always after evacuating a wet or badly contaminated system. Many service technicians also change it after every few jobs, since moisture in the oil limits how deep a vacuum the pump can pull.
Why does cloudy oil slow down evacuation?
Cloudy oil holds water and refrigerant drawn out of earlier systems. That moisture boils off inside the pump under vacuum, which raises the lowest pressure the pump can reach. Evacuation then takes longer and may stop short of the target vacuum.
Can engine oil or compressor oil be used instead?
No. Vacuum pump oil is refined to give off very little vapour under vacuum. Engine oils carry additives and light fractions that evaporate and foam in the pump. Compressor oils such as POE Oil and Mineral Oil belong in the system compressor, not the pump.
How is the oil changed?
Run the pump for a minute to warm and thin the oil, then switch it off and open the drain. Let it empty fully, close the drain, and fill with fresh oil to the level mark with the pump stopped. Run it briefly before the next job.
How should a part-used bottle be stored?
Keep the cap tight and the bottle upright in a clean, dry place. Dust or water that gets into the oil goes straight into the pump at the next change and limits the vacuum it can pull.
Other Evacuation and Charging Equipment
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Last updated: 5 November 2026
