GMT mounts are used to isolate against two main types of mechanical movement; vibration and shock. Put simply; vibration is described as a repeated movement, whereas shock is a one-off disturbance.
Isolation is defined by the level of reduction of vibration passed between the oscillatory system and its surroundings. For example, anti-vibration mountings act as an isolator and as a result, minimise the level of vibration transmitted from an oscillatory system to its surroundings. The rubber hardness of an anti-vibration mount is a critical factor in order to provide isolation. The hardness has a direct impact on the “stiffness” of a part, ultimately affecting how a component will perform in an application.