Over time, the original seal hardens or deforms, and a small amount of air escapes from the device instead of going to the hose. The DreamStation sealing gasket restores this tight contact so that pressure remains constant throughout the night.

• Original Philips Respironics part, designed specifically for DreamStation devices
• Replaced by hand, without tools
• Reduces small whistling noises caused by a worn seal

This is a wear part, so keeping a spare prevents you from having to wait when the old one wears out.