This is a replacement silicone cushion and foam insert for the Aclaim 2 and Fisher & Paykel FlexiFit Nasal HC405 CPAP.
Acclaim™ 2/ FlexiFit™ HC405 Foam and Silicone Cushion InsertReplacement Foam Cushion and Seal for the Fisher & Paykel Aclaim™ 2 Nasal and the Fisher and Paykel Flexifit™ HC405. Soft foam cushion allows for total comfort while wearing your mask. Replacing your Foam Cushion and Seal will save you money. You can replace this portion of your mask while re-using your frame. The frame should be replaced every 6-9 months, while the cushions are every 3 months. Your Foam Cushion and Seal is recommended to be replaced every 3 months to eliminate any unnecessary leaks due to normal wear and tear.
The cushions come in two sizes, Small (900HC427) and Large (900HC428)