Polytetraflouroethylene (TFE) and Kynar are both experiencing long lead times.

Teflon  product PTFE (TFE) along with Kynar  manufacturing requires a mineral called Fluorspar which is mined in Mongolia and China. The worldwide need for this mineral has increased significantly, along with the supply has tightened. PTFE materials have high temperature resistance, excellent chemical resistance and really low co-efficient of friction (slippery) and is utilized within a good deal of applications from non-stick fry cookware to ptfe tape for use at home. This particular mineral is actually the important raw material inside the manufacturing of fluoropolymers, fluorolubricants and many refrigerants.This increase in demand mixed with shortage of raw materials is responsible for a dramatic price increase (almost double in the last year), shortages, and we expect both these factors to continue in the near future.

PVDF