Teflon (TFE) and Kynar both are on allocation.

PTFE - Polytetrafluoroethylene  products, PTFE (TFE) and also PVDF  manufacturing requires a mineral called Fluorspar that's mined in Mongolia and China. The world requirement for this mineral has risen significantly, and the supply has tightened. PTFE materials have high heat resistance, excellent chemical resistance and very low co-efficient of friction (slippery) and is utilized within a great deal of purposes from non-stick fry pots and pans to ptfe tape for personal use. This particular mineral is the essential raw material inside the production of fluoropolymers, fluorolubricants and many refrigerants.This surge in demand joined together with general shortage of raw materials is responsible for a dramatic price increase (almost double within the last year), shortages, and we expect these two factors to stay in affect in the near future.

Acetal Copolymer