Basic Characteristics of Insulation
Thermocouple and Extension Wire

Material Temperature Range Flexibility Flame
Retardance
Resistance to:
Continuous Single Abrasion Acid Solvent Base Moisture
Silicone Rubber 392°F 500°F Excellent Good Fair Poor Fair Good Good
TFE Tape 500°F 600°F Good Excellent Excellent Excellent Excellent Excellent Excellent
Synthetic Fiber 550°F 650°F Good Excellent Excellent Excellent Excellent Excellent Good
Polyimide 600°F 800°F Good Excellent Excellent Excellent Excellent Excellent Excellent
Fiber Glass 900°F 1000°F Good Excellent Good Excellent Excellent Excellent Good
High Temp Fiber Glass 1300°F 1600°F Good Excellent Good Excellent Excellent Excellent Good
Silica Based Insulations 1600°F 2000°F Good Excellent Fair Good Excellent Good Fair
Ceramic Fiber 2200°F 2600°F Good Excellent Fair Excellent Excellent Excellent Fair
Polyvinyl Chloride 221°F 221°F Excellent Good Good Good Fair Good Good
Nylon 257°F 257°F Good Poor Excellent Poor Good Good Good
Fep-PTFE 392°F 500°F Good Excellent Excellent Excellent Excellent Excellent Excellent