Page 313 - BOLA Catalogue
P. 313

 Permeation values in a diagramm
Tubes made of fluorocarbon polymers PTFE, PFA or FEP are manufactured in special production processes. They are examined to be free of pores and can therfore be classified as gastight. The fluorpolymers used are high-performance materials with a partially crystalline polymer structure. As it is usual for these partially crystalline materials,
Frame parameters
» 10m,0,5bar,at23°C   /at50°C Tube material
Air PTFE I.D. 1,6 x A.D. 3,6 mm
PTFE I.D. 4,0 x A.D. 6,0 mm
PTFE I.D. 6,0 x A.D. 8,0 mm
FEP I.D. 1,6 x A.D. 3,6 mm
FEP I.D. 4,0 x A.D. 6,0 mm
FEP I.D. 6,0 x A.D. 8,0 mm
PFA I.D. 1,6 x A.D. 3,6 mm
PFA I.D. 4,0 x A.D. 6,0 mm
PFA I.D. 6,0 x A.D. 8,0 mm
Ozone PTFE I.D. 1,6 x A.D. 3,6 mm
PTFE I.D. 4,0 x A.D. 6,0 mm
PTFE I.D. 6,0 x A.D. 8,0 mm
FEP I.D. 1,6 x A.D. 3,6 mm
FEP I.D. 4,0 x A.D. 6,0 mm
FEP I.D. 6,0 x A.D. 8,0 mm
PFA I.D. 1,6 x A.D. 3,6 mm
PFA I.D. 4,0 x A.D. 6,0 mm
PFA I.D. 6,0 x A.D. 8,0 mm
Helium PTFE I.D. 1,6 x A.D. 3,6 mm
PTFE I.D. 4,0 x A.D. 6,0 mm
PTFE I.D. 6,0 x A.D. 8,0 mm
FEP I.D. 1,6 x A.D. 3,6 mm
FEP I.D. 4,0 x A.D. 6,0 mm
FEP I.D. 6,0 x A.D. 8,0 mm
PFA I.D. 1,6 x A.D. 3,6 mm
PFA I.D. 4,0 x A.D. 6,0 mm
PFA I.D. 6,0 x A.D. 8,0 mm
a gas flow occurs in the course of time through the amorphous phase. This gas flow is named permeation. This slow permeation of fluids through plastics is a typical property. It should not be mixed with “leakage“, which means the passage of media through plastics as a result of damages or improber connection.
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