Scrubber lid

Lid to close the scrubber of the XCCR inbetween dives to allow the head to dry out but keep the scrubber "sealed".
This lid is not sealing perfectly since it has no o-ring.
However the fit is good enough to not allow the scrubber to collect a siginficant amount of CO2 if the scrubber is stored this way for a few days inbetween dives.