For heat shielding applications such as wrapping over and along thermal insulation, use our 3M™ High Temperature Aluminum Foil Tape 433L. This dead soft aluminum foil tape is coated with a clear silicone pressure sensitive adhesive that bonds well to a variety of surfaces and excels in high temperature applications, where other adhesive tapes may fail.

Withstand High Temperatures when Seaming, Sealing and Splicing
Our 3M™ High Temperature Aluminum Foil Tape 433L is a linered version of our 3M™ High Temperature Aluminum Foil Tape 433 and is suitable for die cutting operations. It is designed to excel in a variety of seaming, splicing and sealing applications where high temperatures are a concern. This dead soft aluminum backed tape is coated with a pressure sensitive silicone adhesive that bonds to a variety of difficult substrates while maintaining a strong and reliable bond, even at high temperatures. This tape boasts an excellent performance range from -65ºF to 600ºF (-54ºC to 316ºC) and meets flame resistance requirements of F.A.R. 25.853(a) and is a UL Recognized component (file QQQW2.MH122798).
Recommended Applications


High temperature heat shielding applications
Splice jumbo rolls of aluminum foil
Hold last lap of narrow width rolls during metal annealing process
Cover heating elements or wires to distribute heat

• Linered version of our 3M™ High Temperature Aluminum Foil Tape 433
• Can withstand limited exposure up to 600ºF/316ºC for heat shielding applications
• Thermally conductive tape helps dissipate heat to protect temperature sensitive materials
• Can be used to improve heating and cooling efficiency
• Dead soft aluminum foil backing conforms to curved and uneven surfaces
• Flame resistant – meets requirements of F.A.R. 25.853(a)
• UL Recognized component (file QQQW2.MH122798)

• Backing Material: Aluminum Foil
• Color: Silver
• Specifications: FAR 25.853(a)N/A
• Width: 22 in