Which is false regarding endotracheal tube cuff?

Cuff has no role in fixation of the tube. The cuff is inflated to seal the airway to deliver mechanical ventilation. A cuff pressure between 20 and 30 cm H2O is recommended to provide an adequate seal and reduce the risk of complications. The objective was to maintain the ETT cuff pressure within a range of 20 to 30 cm H2O.