Stepper Motor Damper or Dampener

What's Damper or Dampener?
From wikipedia, a damper is a device that deadens, restrains, or depresses. That's it damper is a kind of buffer between two parts or items. It's existed in daily articles like office chair, crane lift chair, peristaltic pump, etc.
Stepper Motor Damper or Dampener for Stepper Motor
Energy- absorbing Rubber with two pieces mounting face metals used onto Nema17 or Nema23 stepper motor, we call it Stepper Motor Damper.
It functions silimar with gasket or cork.
Why dampener is used for stepper motorized instrument?
Stepper motors are affected by resonance. Resonance is caused by parts vibrating in concert with each other, which can be lessened by fitting a stepper motor antivibration damper. Stepper motors are widely used in instruments, peristaltic pump, 3d printers, etc. To enhance the precision of pumping or printing, dampener are both important.