Basically, squeaks and rattles are caused by improperly controlled relative motion between components. There are three means to prevent squeak and rattles.
| • | Attach components securely so there is no relative motion during operation. | 
| • | Separate components so there is no contact under operating conditions. | 
| • | Insulate components so no sound occurs with relative motion between components. Low uniform friction surfaces can be provided to eliminate a stick-slip motion. |