A used rubber door seal from the sliding side door of my Vivaro. 
This seal was on my van when I bought it second hand and has oil along the bottom edge. 
It could be cleaned and is good otherwise. 
Fine if you're not fussy.
Compatible with Renault Trafic and Nissan Primastar. 
Evri standard or a similar courier, or collection from Totnes in South Devon.