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Fluortubing Conductive PTFE Tubing
Fluortubing conductive convoluted PTFE Tubing is designed to prevent build-up of static electricity in
PTFE Hose-liners.
Static electricity can occur in virgin PTFE Hoseliners when a non-conductive fluid or gas is pumped
through the liner. Friction with the surface of the isolating virgin PTFE can build an electrostatic load,
that may eventually arc through the liner wall towards a conductor (causing pinholes) or cause arcing
when disconnecting a hose.
Both cases can result in explosion and fire risks as well as fluid/gas spills.
Fluortubing conductive PTFE Hose is made of a special compound that will allow any electrical load to
be dissipated either trough the hose wall to a conductive braiding or to a flaire face or crimped-on
conductive fitting.
The PTFE compound, used for conductive hose consists of PTFE (type 62 Dupont or CD 086 Fluon), a
2,5 to 3% load of carbon black and some extrusion aids.
In standard applications , carbon black is used that gives a very high conductivity thus easily detectable
even with an ordinary Ohmmeter.
Typical values from fitting to fitting are some 10.000-1.000.000 Ohms.
From liner ID to metalic braid typically 100.000 ohms.
For food or high purity applications an "all gas black" carbon is used that has FDA-approval: Monarch
4750 bij Cabott.
However,with this carbon type conductivity values are somewhat lower thus more difficult to
measure. Still it gives plenty of conductivity to prevent static loads from building up in the hose liner.
Carbon black has very good chemical stability and will only in very few cases give chemical reactions
with products that are conveyed through the hose liner.
Neither mechanical properties nor permeability of the PTFE are influenced bij the addition of carbon
black.
Generally, a conductive hose liner can be applied without restrictions in applications where virgin PTFE
liners would be suitable.
Fluortubing conductive convoluted PTFE Tubing is designed to prevent build-up of static electricity in
PTFE Hose-liners.
Static electricity can occur in virgin PTFE Hoseliners when a non-conductive fluid or gas is pumped
through the liner. Friction with the surface of the isolating virgin PTFE can build an electrostatic load,
that may eventually arc through the liner wall towards a conductor (causing pinholes) or cause arcing
when disconnecting a hose.
Both cases can result in explosion and fire risks as well as fluid/gas spills.
Fluortubing conductive PTFE Hose is made of a special compound that will allow any electrical load to
be dissipated either trough the hose wall to a conductive braiding or to a flaire face or crimped-on
conductive fitting.
The PTFE compound, used for conductive hose consists of PTFE (type 62 Dupont or CD 086 Fluon), a
2,5 to 3% load of carbon black and some extrusion aids.
In standard applications , carbon black is used that gives a very high conductivity thus easily detectable
even with an ordinary Ohmmeter.
Typical values from fitting to fitting are some 10.000-1.000.000 Ohms.
From liner ID to metalic braid typically 100.000 ohms.
For food or high purity applications an "all gas black" carbon is used that has FDA-approval: Monarch
4750 bij Cabott.
However,with this carbon type conductivity values are somewhat lower thus more difficult to
measure. Still it gives plenty of conductivity to prevent static loads from building up in the hose liner.
Carbon black has very good chemical stability and will only in very few cases give chemical reactions
with products that are conveyed through the hose liner.
Neither mechanical properties nor permeability of the PTFE are influenced bij the addition of carbon
black.
Generally, a conductive hose liner can be applied without restrictions in applications where virgin PTFE
liners would be suitable.
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