Puts up ring inside to hang (6,2)
I believe the answer is:
string up
'hang' is the definition.
(I know that hang can be written as string up)
'puts up ring inside' is the wordplay.
'up' is a reversal indicator (in down clue: letters go upwards).
'inside' is an insertion indicator.
'puts' backwards is 'stup'.
'stup' going around 'ring' is 'STRING UP'.
'to' is the link.
(Other definitions for string up that I've seen before include "Carry out death sentence" , "Hang" .)