How to Test the Sealing of Jacketed Glass Reactor

The jacketed glass reactor is widely used in chemical synthesis, pharmaceuticals, food processing, and material research. As a precision laboratory and pilot-scale equipment, its sealing performance directly affects the accuracy, safety, and stability of experiments.

To ensure reliable operation, it is essential to test the sealing of the glass reactor regularly. Below are practical methods for testing and maintaining sealing performance.

1. Vacuum Holding Test

• Connect the reactor to a vacuum pump and gradually reduce the pressure.

• Observe the vacuum gauge for 10–30 minutes.

• If the pressure remains stable, the sealing is good. If the pressure drops, there may be leakage at joints or seals.

2. Soap Solution Leak Test

• Apply soap solution around joints, valves, and glass flanges.

• If bubbles appear, this indicates air leakage.

• This method is simple and suitable for quick on-site inspections.

3. Seal Ring and Flange Inspection

• Regularly check the PTFE sealing rings and flange joints.

• Replace aged or deformed seals promptly.

• Apply a thin layer of vacuum silicone grease to improve sealing performance.

4. Valve and Pipeline Check

• Ensure that the feeding valve, discharge valve, and circulation pipelines are tightened.

• Debris inside the valve can reduce sealing efficiency—clean and reassemble if needed.

5. Regular Maintenance

• After each experiment, clean the ground edges of glass interfaces.

• Store the reactor in a dry, ventilated environment to prevent corrosion of metal connectors.

• Conduct periodic sealing tests, especially before reactions involving vacuum or high temperatures.

Conclusion

The sealing performance of a jacketed glass reactor is crucial for safe and efficient chemical reactions. By applying vacuum holding tests, soap solution checks, and routine seal inspections, users can prevent leakage, improve efficiency, and extend equipment lifespan.