Heat Shield Sleeving Thermo Sleeve

Superior Thermal Defense for Demanding Automotive Applications

Low Price Guarantee


What's special about this thermal sleeving?

  • Insulates automotive cables and hoses to protect from conductive heat up to 750° F (398°C) and radiant heat temperatures up to 2000°F (1093°C), providing superior thermal protection for your vehicle's components
  • Fireproof, oil-resistant aluminized jacketing for added protection from common under-the-hood destructive elements
  • Aluminized Mylar outer and fiberglass inner construction weighs less and is more flexible and heat resistant than traditional rubber coated fiberglass sleevings, resulting in higher performance and easier installation
  • Click for More Features
UL logo

When it comes to high-performance vehicles, going without thermal protection is never an option, and certainly no area to cut corners. Thermo Sleeve is designed with this in mind. This fireproof, oil and chemical resistant sleeving is sure to provide the reliable protection you need, with looks that make you proud to pop the hood time and time again.


Thermo-Sleeve 3 Foot Sections
TT-14005 1/2"
TT-14010 1"
TT-14015 1-1/2"
TT-14020 2"
TT-14025 2-1/2"
Thermo-Sleeve 12 Foot Sections
TT-14006 1/2"
TT-14011 1"
TT-14016 1-1/2"
TT-14021 2"
TT-14026 2-1/2"
  • Reflects 90% of radiant heat for superior protection in the hot, enclosed areas typical of automotive application
  • Available in 3 or 12 foot cuttable lengths for easy customization
  • Glossy outer foil adds classic show-ready looks to your vehicle


View Measurement Conversion Chart


Property Value
Conductive Heat Protection 750°F (398°C)
Radiant Heat Protection 2000°F (1093°C)
Outer Material Aluminized Mylar Foil
Inner Material Fiberglass
Certifications UL 214, UL 723, MIL-I-24244

No Manual Available





ThermaShieldThermaShield Tube
From / 100FT
RoHS compliant aluminum-laminated fiberglass sleeving withstands temperatures up to 626°F without melting, burning, or delaminating.
Thermo-Flex Heat ShieldThermo-Flex Heat Shield
Aluminum, silica and stainless steel tubing is highly flexible, and insulates automotive wiring and hoses against temps up to 750°F.

braided automotive wrapInsultherm™ Braided Header Wrap
Available in silica and fiberglass formulas, these Insultherm™ braided wraps extend your car's life and performance by reducing under-hood temps by up to 70%.

ThermaShield WrapThermaShield Wrap
From / 100FT
Fiberglass and aluminum wrap will not support combustion, and is designed to protect even the most oddly shaped connectors from extreme heat, gasoline, and engine chemicals.



Q:any finish ends for sleeves

I would like to use this sleeve on my show car engine compartment. Is there anything I could use to put on the cut ends to give the sleeve a more finished look at the end points?

Asked by kenneth b. on


  • - Thank you for your question. We have seen solutions like cable ties and also heat shrink on the cut ends. I would say Heat Shrink is your best choice.

    Fernando M. on

Q:what is the inside diameter

1/2 nominal mean that 1/2 tubing will fit inside the heat shield

Asked by Anonymous user on


  • - Thank you for your question. Your 1/2" tubing should fit just fine.

    Fernando M. on

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by PowerReviews
Thermo-Sleeve 1/2" x 3ft

(based on 1 review)

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Reviewed by 1 customer

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(1 of 2 customers found this review helpful)


Worked Great

By DanLS1

from Chicago, IL

About Me Avid Do-It-Yourselfer

Verified Buyer


  • Easy To Install
  • Easy To Use


    Best Uses

    • Car

    Comments about Thermo-Sleeve 1/2" x 3ft:

    I installed this product on the new clutch line for my 99 Camaro. These cars are notorious for boiling the clutch fluid. The thermo-sleeve helped a lot!

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