Polytetraflouroethylene (TFE) and Kynar both are experiencing long lead times.
PTFE - Polytetrafluoroethylene product PTFE (TFE) along with Kynar-PVDF manufacturing requires a mineral called Fluorspar which is mined in Mongolia and China. The world interest in this mineral has increased significantly, additionally, the supply has tightened. PTFE materials have high heat resistance, excellent chemical resistance and incredibly low co-efficient of friction (slick) and is utilised throughout a good deal of applications from non-stick fry griddles to ptfe tape for home use. This mineral is a key raw material in the manufacturing of fluoropolymers, fluorolubricants and a lot of refrigerants.This increasing amount of demand paired with shortage of raw materials is mainly responsible for a dramatic price increase (almost double in the last year), shortages, and we expect these two factors to keep at it in the near future.
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