Arrest nabbing gang for 'special cap' (8)
I believe the answer is:
screwtop
'special cap' is the definition.
'arrest nabbing gang' is the wordplay.
'arrest' becomes 'stop' ('stop' can be a synonym of 'arrest').
'nabbing' means one lot of letters goes inside another.
'gang' becomes 'crew' ('crew' can be a synonym of 'gang').
'stop' placed around 'crew' is 'SCREWTOP'.
'for' is the link.
(Other definitions for screwtop that I've seen before include "one goes on the bottle" , "that closes jar" , "cap or lid" , "kind of bottle" , "Describing a type of bottle" .)