First you should ask this question. What is the advantage of using Teflon over either a oil impreginated bronze bushing or a standard ball bearing?
What is the load that is going to be applied to this joint?
Will the Teflon carry that load with a safety factor?
What are the material properties of the Teflon I am using.
http://www.ptfeparts.com/dupont/teflonlink8.htm