1. white powder chemical products 2.polytetrafluoroetylene is shot for PTFE, ... , widely used in a variety of anti-acid and organic solvents), tightness, high lubricationviscosity, electrical insulating properties and ... alkali resistance: do not dissolve in acids, alkalis and organic solvents (including magic acid, fluorine antimony sulfonic acid). ... with sealing tape, mold release. PTFE molding powder