Static-free carpet fiber (5)
I believe the answer is:
sisal
'static-free carpet fiber' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sisal that I've seen before include "Plant producing rope" , "Strong rope fibre" , "Agave rope-fibre" , "Agave yielding fibre" , "Natural fibre" .)