This prevents jars of wine entering curiously sober bars (5,8)
I believe the answer is:
shock absorber
'this prevents jars' is the definition.
The definition suggests a singular noun which matches the answer.
'wine entering curiously sober bars' is the wordplay.
I cannot really understand how this works, but
'wine' could be 'hock' (type of wine) and 'hock' is present in the answer.
an anagram of 'sober' is 'sorbe' which is within the answer.
an anagram of 'bars' is 'sabr' which is within the remaining letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'of' is the link.
Can you help me to learn more?
(Other definitions for shock absorber that I've seen before include "Car ride smoother" , "Ride-smoothing device" , "Cushioning device" , "Device for lessening effect of jolts in a car" , "towel for hair?" .)