Jim Stewart wrote:

John Doe wrote:

Fluoropolymer Material
Virgin Electrical Grade Teflon® PTFE

Yup, exactly what I was talking about.

Oops, I'll get it next order.

(8636K11) GLASS-FILLED PTFE SHEET

Like fabric, resembles stiff leather without the shag. Doesn't feel
slick to me.

(2636T22) PTFE FILLED DELRIN STRIP

Flexible but hard, mirrorlike on one side, shiny on the other side.

(8619K61) POLYETHYLENE (HDPE) SHEET

Somewhat shiny and flexible like the plastic used for a modern school
folder.

(McMaster part numbers)