This replacement gasket is made of silicone rubber and fits on the inside of the flip lid of the S9 H5i CPAP humidifiers. The gasket seals against the top of the water chamber when the lid of the humidifier is closed.

The replacement flip lid seal is compatible with both types of ResMed H5i water chambers - standard and cleanable/openable.

Please note that this rubber seal is only compatible with the ResMed S9 H5i CPAP machine with humidifier. It is not compatible with any other CPAP machines or CPAP humidifiers.

Don't see the item you're looking for? Call CPAP-Supply.com toll-free at 1-888-955-2727 if you have any questions about ordering replacement parts for whichever CPAP machine you're using.