Polytetraflouroethylene (TFE) and PVDF both are in short supply.

Teflon  product PTFE (TFE) and also PVDF  manufacturing requires a mineral called Fluorspar that is mined in Mongolia and China. The worldwide need for this mineral has grown significantly, as well as supply has tightened. PTFE materials have high heat resistance, excellent chemical resistance and incredibly low co-efficient of friction (slippery) and is utilised throughout a great deal of applications from non-stick fry cookware to ptfe tape for home use. This specific mineral is actually a crucial raw materials in the manufacturing of fluoropolymers, fluorolubricants and quite a few refrigerants.This rise in demand paired with shortage of raw materials is mainly responsible for a dramatic price increase (almost double over the last year), shortages, and we expect both these factors to continue in the near future.

Foraflon