I have designed a gangway for a schoolproject, the gangway made in 2 parts the second part can retract in the first part. The total length is 35 meters, i'm looking for aan good way to make the two parts go smooth in an out eacht other. I was looking into Teflon and what i thought it was a excellent material but no other gangway in the offshore makes use of this system and I'm an wondering if I'm missing why it won't work. Does anyone have any experience with Teflon? in the accement you find a screenshot of the design.