Petrochemical and chemical processing:
PTFE is the material of choice for gaskets, vessel linings, pump
interiors, washers, rings, seals, spacers, dip tubes and well-drilling
components because it is corrosion resistant and chemically inert;
it is unaffected by virtually all acids and caustics and functions
in environments to 500 degrees F..
Electrical applications: PTFE is
one of the best insulators known. In thin sections, it will insulate
to 500 volts per mil. There are grades of PTFE which have even greater
dielectric strength. It is frequently used in wire and cable wrap,
and to separate conductive surfaces in capacitors. Thick walled
close-tolerance extruded tubing is the PTFE shape of choice where
machining or drilling long lengths to close tolerances is impossible.
Multi-hole tubing can be extruded. PTFE can be machined into standoff
insulators, and many different types of high voltage encapsulation
devices for electrical components.