3M™ Cold Shrink Silicone Insulator 8443-6.5

3M ID 7000058007
  • Highly elastic Silicone rubber
  • Simple installation with no tools required
  • Application temperature range -55 to +260 ° C
  • Waterproof, meets the requirements of ANSI C 119.1
View all details
Product Details

3M™ Cold Shrink Silicone Insulators 8440 series is made of highly elastic Silicone rubber and is used both for the electrical insulation of polymeric or rubber-insulated cables up to 1 kV and for the protection and sealing of non-electrical applications. It also reliably protects connections between cables with different diameters.

The 8440 series is suitable both for indoor and outdoor applications as well as for underground or underwater installation. In addition, the Cold Shrink tubing ensures flexible kink protection and can also be used for cable sheath repairs. Quick and easy assembly by pulling out the supporting core enables reliable installation without special tools, such as heating burners. After assembly, the cold shrink tubing ensures reliable protection against moisture thanks to its constant radial contact pressure. Its excellent thermal stability and its resistance to acids, alkalis, ozone and UV radiation guarantee long-term functionality, while its self-extinguishing properties ensure a high level of safety.

  • Highly elastic Silicone rubber
  • Simple installation with no tools required
  • Application temperature range -55 to +260 ° C
  • Waterproof, meets the requirements of ANSI C 119.1
  • Resistant to acids and alkalis, ozone and UV radiation
  • Self-extinguishing

Suggested Applications

  • Primary electrical insulation for all solid dielectric (rubber and plastic) insulated wire and cable splices
  • Electrical aircraft cables
  • Sealing for high-voltage air insulated connectors and lugs
  • Insulation of secondary splices copper or aluminium conductors and inline conductor transition connectors
  • Sheath repairs
Cable Type
Power Cable
Conductor Material
Aluminum, Copper
Manufacturing Origin
Maximum Operating Temperature (Celsius)
260 Degree Celsius
Number of Conductors
Operating Temperature (Celsius)
-55 up to +260°C
Overall Diameter (Metric)
14.3 mm
Overall Length (Metric)
165 mm
Product Type
Relaxed Tube Length (metric)
0.165 m
RoHS 2011/65/EU Compliant
RoHS EU Comments
RoHS 2011/65/EU compliant without exemption
Shielding Type
Tape Shield, UniShield®, Wire Shield
Shrink Ratio
Splice Type
Cold Shrink
Contact Us

Send Us a Message

Thank you for your interest in 3M. In order to help us manage and respond to your query effectively, we politely ask you to provide some key information, including your contact details. The information you provide will be used to respond to your request through email or telephone by a 3M representative or one of our authorised business partners with whom we might share your personal information consistent with the 3M privacy policy

  • 3M takes your privacy seriously. 3M and its authorized third parties will use the information you provided in accordance with our Privacy Policy to send you communications which may include promotions, product information and service offers. Please be aware that this information may be stored on a server located in the U.S. If you do not consent to this use of your personal information, please do not use this system.

  • Send Message

Thank you for your contacting 3M

We have received your message and are now looking into your enquiry
One of our representatives will get in touch with you by phone or email

An error occurred.