O-rings for manometers

There are many different types of manometers used in glove boxes and they serve to measure and check the negative pressure/pressure of a glove box, the vacuum airlock or the pressure of a purge chamber.

Whatever the model, it is recommended to carry out a verification or replacement of the toric seal from time to time to ensure the tightness of the pressure gauge. A joint in poor condition can be the cause of leaks or degraded performance.