Skip to Primary Navigation Skip to Site Navigation Skip to Main Content All Site Map

3M™ Cold Shrink Insulator 8429-9, Tape, Wire, Unishield, 1 kV, 10 per case

3M ID  80610456313    UPC#  00054007099314    Part Number  8429-9     
Cold Shrink 8420 Series
Cold Shrink 8420 Series
3M™ 8420 Cold Shrink Connector Insulator is an open-ended, tubular sleeve that provides ozone, acids and alkalis resistance. This environmental sealing insulator offers primary electrical insulation for 1 kV-rated applications. The tough, durable, EPDM rubber construction makes the insulator withstand operating temperatures of -40 to 194 degrees F (-40 to 90 degrees C).
  • Specially designed for primary insulation of solid dielectric insulated wires and cable splicing rated to 1000 volts
  • Simple installation which requires no tools
  • Suitable for insulating secondary splices, direct-buried or submersible and dig-in repairs
  • Insulates cable or connectors within a diameter range of 1.27 - 2.67 in (32,2 - 67,8 mm)
  • Accommodates 900 to 1000 kcmil conductor sizes
  • Made of EPDM rubber which contains no chlorides or sulfur
  • Withstands temperatures of -40 to 194 degrees F (-40 to 90 degrees C)
  • Environmental sealing for communication and other non-electrical applications
  • ANSI Certified and RoHS 2011/65/EU Compliant
  • 10/case
Need Help?

Questions? We can help

Contact Us



3M™ 8420 Connector Insulator is designed for use on all solid dielectric insulated wires and cable splices. This cold shrink insulator offers moisture-tight sealing while maintaining its prolonged resiliency and pressure. It is ideal for insulating secondary splices, direct-buried or submersible, dig-in repairs and physical protection of high-voltage, air-insulated connectors or lugs. ANSI Certified and RoHS 2011/65/EU Compliant.


 Brand‎‎ 3M
 Cable Type‎‎ Power Cable
 Conductor Material‎‎ Aluminum,‎ Copper
 Conductor Size Range‎‎ 900-1000 kcmil
 Conductor Sizes‎‎ 1000 kcmil,‎ 900 kcmil
 Inner Diameter After Heat-Shrink‎‎ 32.2 mm
 Inner Diameter Before Heat-Shrink‎‎ 67.8 mm
 Maximum Connector Length‎‎ 5.0 in
 Maximum Connector Length (metric)‎‎ 127.0 mm
 Number of Conductors‎‎ 1
 Product Type‎‎ Splice
 RoHS 2011/65/EU Compliant‎‎ Yes
 RoHS EU Comments‎‎ RoHS 2011/65/EU compliant without exemption
*Important RoHS information
 Shielding Type‎‎ UniShield®,‎ Wire Shield,‎ Non-shielded,‎ Tape Shield
 Splice Type‎‎ Cold Shrink
 Trademark‎‎ 3M
 Voltage‎‎ 1 kV

Manufacturing Origin: USA

The designation that a product is Manufactured in the USA means the product undergoes substantial transformation in one of our U.S. Manufacturing plants. Some products contain imported components.

Note: 3M products offered on a government contract that require country of origin representation must be certified by 3M Trade Compliance. Contact customer service at 800-245-3573 to request a certificate.