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

Teflon  product PTFE (TFE) and also Kynar  manufacturing requires a mineral called Fluorspar which is mined in Mongolia and China. The world interest in this mineral has risen significantly, as well as the supply has tightened. PTFE materials have high heat resistance, excellent chemical resistance and incredibly low co-efficient of friction (slick) and is utilised within a good deal of applications from non-stick fry pots and pans to ptfe tape for personal use. This particular mineral is actually the key raw materials in the production of fluoropolymers, fluorolubricants and quite a few refrigerants.This increased demand coupled with general shortage of raw materials is mainly responsible for a dramatic price increase (almost double within the past year), shortages, and we expect both these factors to stay in affect in the near future.

Polystone PVDF