Vibration is both necessary and a nuisance. In various applications we need vibration for parts to work correctly. Even sound is nothing more than vibration. But, if the vibration becomes excessive or does not follow the correct path, machines can break and the people who are using the machine can become fatigued. In all applications from personal comfort to delicate aerospace applications, vibration reduction is both a comfort and safety consideration. There are many applications that should be considered when choosing a vibration reduction system.