Cable / Wire
Guide to Wire and Cable Insulation and Coverings
Which insulation Material? |
usable temperature range |
Application Note |
PVC |
-10°C to 105°C |
Good general-purpose insulation for “light” environments. Waterproof and very flexible. |
PFA (extruded) |
-75°C to 250°C |
Resistant to oils, acids other adverse agents and fluids. Good mechanical strength and flexibility. PTFE better for steam/elevated pressure environments |
PTFE (taped & wrapped) |
-75°C to 250/300°C |
Resistant to oils, acids other adverse agents and fluids. Good mechanical strength and flexibility. |
Glassfibre (varnished) |
-60°C to 350/400°C |
Good temperature range but will not prevent ingress of fluids. Fairly flexible but does not provide good mechanical protection. |
High temperature glass fibre |
-60°C to 700°C |
Will withstand temperature up to 700°C but will not prevent ingress of fluids. Fairly flexible, not good protection against physical disturbance. |
Ceramic Fibre |
0 to 1000°C |
Will withstand high temperature, up to 1000°C. Will not protect against fluids or physical disturbance. |
Glassfibre |
-60°C to 350/400°C |
Good resistance to physical disturbance and high temperature (up to 400°C). Will not prevent ingress of fluids. |
For maximum accuracy extension cables should be used and terminals and connectors should be of thermocouple materials to maintain continuity.