roger.fellows wrote:I suppose if the valve starts to leak the slime thinks it has a job to do???
I have used it in the past but now just carry a canister of sealant for punctures.
Odd that it is only now you are having issues, how long has the sealant been in?
I think 'Slime' say that the sealant has a 2 year life span after being put in a tube, which would mean a tube change every 2 years (which is why I don't use it anymore) I assume that eventually it starts to get some partially 'cured' bits' and maybe it is then possible for of these 'bits' to stop the valve seating when you check the pressure. In normal use if you make sure the valve is uppermost when you check / inflate then there should be no issues
I know this last para does not answer your question but it is always a good idea to fit a decent valve cap, one with a rubber seal inside (not one of the cheap plastic only types) as this provides a second line of sealing should the valve start to leak slightly.
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