Heat Shield Armor Weld Heat Shield Tape is used to repair Heatshield Armor. It may also be used on tight seams of heat shield armor as a cosmetic improvement. The weld tape is not intended to be used to hold the Heat Shield Armor Weld Heat Shield Tape in place, it is strictly used on cold side if insulation for cosmetic reasons. 0.003" thick Operating Temperature Fahrenheit: 1100 Peak Temperature (30 seconds or less) Fahrenheit: 2000 Temperature Rating: Radiant Insulation Type: Radiant heat barrier, requires 1 Inch of airspace. Not designed for direct contact. Color: Silver/Aluminum