CO2 cartridges - best before ? - and lifejacket maintenance

This morning there was a slight reduction ... but still more than capable of holding a person up .....

Will try a few 'dry' ways to cure it before introducing silicon etc. but tks for idea ...

Its a backup anyway ..
 
Surprised there is no cap to keep stuff out. If it is very slow it doesn't matter, how long will you live in the water anyway? And, of course, the tube is there for a reason!
 
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