ResMed H5i CPAP Humidifier Flip Lid Seal

Fair price and quick delivery.

Was exactly what I needed to replace my lost seal. Fit perfectly with no modification needed.

Yes, the video doesn't match, but it is really easy to replace.

You pull the old one off the humidifier and then line up the new one in its place. The silicone forms right into place.

Personally, I recommend changing it out every six months to a year as the pressure does fatigue the material and the suppleness does deteriorate over time.

The video paired with the product is useless. It shown how to assemble the humidifier unit and pair it with the main Resmed S9 CPAP unit, but it does NOT show how to replace the H5i Humidifier Flip Lid Seal itself.
You might want to shoot a video of that procedure and post it with this item instead. Just a thought....