Radial shaft seal measurement

Radial shaft seal measurement

Leak testing using a radial shaft seal takes place in two steps:

1. The main test chamber (e.g. oil chamber) is placed under pressure. Here, the bypass valve between the oil chamber and the shut-off area remains closed. During the settling phase, if there is a leak at the radial shaft seal, after a short time a stable flow will be established against the atmosphere at the mass flow sensor. This is measured in cm³/min.

2. After conclusion of the first measurement phase, the valve upstream from the mass flow sensor is closed and the bypass to the shut-off area is opened. During the test which is then performed, the leakage of the main chamber (e.g. oil chamber) is determined. Any possible lack of leak tightness at the radial shaft seal is neutralized as both chambers are linked through the bypass.