Wire Insulation Identification/Application Guide

HH

High Temp
Glass Braid

High Temp
Glass Braid

-73 to 704°C
(-100 to 1300°F)

Poor

Good

Poor

XR

Refrasil Braid

Refrasil Braid

73 to 871°C
(-100 to 1600°F)

Poor

Good

Poor

XC

Nextel Braid

Nextel Braid

-17 to 1204°C
(0 to 2200°F)

Fair

Good

Poor

HH

Excellent

Excellent

Excellent

Excellent

Fair

High Temp. Glass Braid Over Each Conductor, and Binder Impregnated. Overall High Temp Glass Braid Applied and Bindered.
Binder Improves Moisture and Abrasion Resistance But is Destroyed
Above 204°C (400°F).

XR

Excellent

Good to 316°C (600°F)

Good to 316°C (600°F)

Excellent

Poor

Braid of Vitreous Silica Fibre Applied to Each Bare Wire. Then Over Both. Suitable to 982°C (1800°F) if Not Subjected to
Flexure or Abrasion.

XC

Excellent

Good

Good

Excellent

Fair

High Temp. Alumina-Boria-Silica Ceramic Fibre Braided Over Each Conductor Then Over Both. Not Recommended for Platinum Thermocouples or Exposure to Molten Tin and Copper, Hydrofluoric or Phosphoric Acids, or Strong Alkalies.