Depending on the application and to suit particular environmental factors like temperature, humidity, physical integrity, the user can usually choose among several insulating materials.
- PVC (code PVC – short code P)
Polyvinyl Chloride is a thermoplastic resin with good resistance to water and aqueous saline solutions, acids and alkalis, moderate resistance to organic solvents and oils. PVC is a self extinguishing material. Generally usable between -30 and +105 °C.
- Silicone rubber (code SIL – short code S)
Silicon rubber insulate d cables show resistance to hot air up to 180-200°C. This material is not recommended for exposure to steam above 130°C. Do not use with alkalis, acids, liquid fuels, chlorinated hydrocarbons, esters, ketons and ethers, aromatic oils. Generally usable between -40 and +200 °C.
- Glass braid
Impregnated glass fibres type «E» (code TEX – short code E) usable to 400 °C.
- Fluorinated resins
These resins exhibit outstanding chemical inertia, dielectric properties and heat resistance. Most common types are PTFE (short code F), PFA (short code A) and MFA (short code M). While PTFE has the highest melting point, other perfluorinated resins like PFA and MFA exhibit similar chemical resistance with slightly lower melting points but have the advantage to be easily extruded.
- PFA melts at 306 °C and can be used for continuous operation between -200 and +260 °C
- MFA melts at 280 °C and can be used for continuous operation between -200 and +250 °C
Fire resistant cables: available upon request