Hydromounts from Vibracoustic offer the highest possible driving comfort. They combine the acoustic isolation function of a conventional rubber mount with balanced damping performance. In a hydromount, the main rubber spring has an upper and lower chamber. The chambers are connected by a series of canals and separated by a rubber valve. The mainspring is filled with hydraulic fluid, which acts as secondary damping. On excitation or shock input, the rubber valve opens and closes the bypass channel redirecting glycol flow between the two chambers and changing the stiffness of the mount. To optimize the functioning of the grid, complex hole patterns are developed in painstaking test series to meet customers’ requirements.