Trade disc and record for sticker (9)
I believe the answer is:
sellotape
'sticker' is the definition.
(I've seen this before)
'trade disc and record' is the wordplay.
'trade' becomes 'sell' (I've seen this in another clue).
'disc' becomes 'O' (disc-shaped letter).
'and' says to put letters next to each other.
'record' becomes 'tape' (taping is a kind of recording).
'sell'+'o'+'tape'='SELLOTAPE'
'for' is the link.
(Other definitions for sellotape that I've seen before include "Trade mark product used for sealing etc" , "Adhesive strip" , "sticker" , "Adhesive material" , "Sticky" .)