PTFE (TFE) and PVDF both are experiencing long lead times.

Teflon  product PTFE (TFE) as well as Kynar  manufacturing requires a mineral called Fluorspar that is mined in Mongolia and China. The worldwide need for this mineral has increased significantly, additionally, the supply has tightened. PTFE materials have high heat resistance, excellent chemical resistance and very low co-efficient of friction (slick) and is utilized within a good deal of purposes from non-stick fry kitchenware to ptfe tape for home use. This specific mineral is a critical raw material within the manufacturing of fluoropolymers, fluorolubricants and many refrigerants.This surge in demand paired with general shortage of raw materials is mainly responsible for a dramatic price increase (almost double during the last year), shortages, and we expect both these factors to continue in the near future.

Polystone PVDF