What else besides a CPAP wipe can I use to clean my AirTouch UltraSoft memory foam cushion?

AirTouch F20 cushion

Simple baby wipes are perfect for this task. When shopping for wipes ensure the ones selected specify that they are alcohol-free. Antibacterial or alcohol based wipes will cause damage to the memory foam.

If the cushion is accidently submerged in water, how long generally does it take to dry out? Is there anything recommended to dry it faster? What will happen to the cushion and should I now replace it?

If the AirTouch F20 cushion comes in contact with a significant amount of water it is recommended that you replace the cushion. There is no effective way of drying the cushion without compromising the cushion performance.