Pressure vs. Temperature guide for PTFE Tube (Thin Wall) as below:
Note: ALL values are indicative ONLY and as such are only meant as a general guide. Corresponds with pressures outlined in the sizes tables for Metric and Imperial PTFE Tube
Information on this page relates to:
-Imperial PTFE Tube
-Metric PTFE Tubing
-Microbore PTFE Tubing
-PTFE Thin Wall Tubing
-PTFE Tube Suppliers
Please be aware that all information contained on our website can in no way be relied upon as solid fact. All of the technical information provided is to be interpreted as a general guide only.
PTFE Tubing Technical Information
PTFE Thin Wall Tube Tolerances as below:
Paste extruded PTFE tubing can be used in a temperature range from -200°C (-392°F) up to 250°C (482°F) in static conditions. It is used in an extremely wide range of applications: Biomedical, Aerospace, Electrical, Electronics, Household Appliances, CPI and Automotive. Market demand for superior quality PTFE tube is increasing more and more.
Our production systems and control can ensure the highest quality and consistency in terms of properties and performance. PTFE Thin Wall Tubing can be supplied in different colours and fillings. Special dimensions and tolerances can be produced on request.
In static conditions the upper working temperature limit is 250°C (482°F). Under dynamic conditions the limit has to be reduced to 200°C (392°F).
Working pressure is a function of the burst pressure; it is related to the PTFE tubing sizes and to the temperatures involved.
Working pressure of PTFE tubing is also function of the temperature:
When the temperature increases, pressure has to be lowered by a given percentage, as per the table (left). (Note: ALL information and diagrams are to be used as general guides ONLY)
Sharp bending to prevent collapse of the tubing wall has to be avoided during assembly. Sharp bends result in a limitation of the flow and some times the tubing may crack.
Minimum bending radius of PTFE Thin Wall Tubing depends on many factors; the most important of which are: dimension, working temperature, applied pressure and pressure fluctuations; of lesser importance is also the nature of fluid conveyed.
Roughly the minimum bending radius (at 20°C-68°F) depends on OD and wall thickness. If wall thickness is 1 mm it can be considered: Rmin mm = 9 to 11 times OD mm (value to be increased at the decreasing of wall thickness).
When special configurations are required it is possible to heat the tubing first, followed by bending and cooling it in the required shape. A metallic malleable insert to avoid the collapse of the walls can be put into the tubing during bending.
The manufacturing process of PTFE Thin Wall Tubing has a 100% automatic control system, capable of a dimensional fail-free output. Main physical and dimensional characteristics are according to the specific Standards.
PTFE tubing normally complies with UL Standards for electric insulation and flammability
Our products are manufactured with raw material supplied by first class manufacturers. The quality management system is Certified ISO 9001.
To ensure a correct storage of PTFE Thin Wall Tubing the original packing has to be kept. We suggest to stack not more than two/three superimposed layers of bags.