In this section, you will find a full range of Nasal Mask replacement cushions. Cushions in most sizes are offered for a variety of different masks. Providing over 25 different nasal mask replacement cushions you are sure to find the replacement cushion for your specific nasal mask. Over time mask cushions will lose elasticity causing the seal to be poor. Replacing the Nasal cushion ensures comfort and compliance. Most CPAP users will change their cushion every 3-6 months.