Obscure rich meet in new order (8)
I believe the answer is:
hermetic
'obscure' is the definition.
(both can mean esoteric)
'rich meet in new order' is the wordplay.
'in new order' indicates an anagram (I've seen this in other clues).
'rich'+'meet'='richmeet'
'richmeet' with letters rearranged gives 'HERMETIC'.
(Other definitions for hermetic that I've seen before include "Completely sealed" , "Sealed so as to be airtight" .)