These are replacement caps that are used to seal the oxygen tubing ports on most ResMed CPAP therapy masks. These allow oxygen tubing to be attached when you are adding supplemental oxygen is added to your CPAP airflow.
These replacement port caps are compatible with the following ResMed Masks:
It's great to have spare replacement port caps, if you ever lose the originals or they become loose.
How often should I replace my oxygen port caps?
The port caps should be replaced when the fit becomes loose.
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