3M 8429-6 8429-6 COLD SHRINK INSULA
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Manufacturer 3M
Mfg Catalog # 8429-6
Irby Part # 555117


  • Specially designed for primary insulation of solid dielectric insulated wires and cable splicing rated to 1000 volts
  • Simple installation which requires no tools
  • Sealing of terminal lug barrels, conduit couplings and conduit-to-cable breakouts
  • Made of black EPDM rubber
  • 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


  • Application: Insulation, mechanical protection, repair
  • Cable Shielding: Tape Shield - UniShield┬« - Wire Shield
  • Cable Type: Non-Shieled, Solid Dielectric Power Cable
  • Color Family: Black
  • Conductor Material: Aluminum - Copper
  • Conductor Sizes: N/A
  • Halogen Free: No
  • Inner Diameter After Shrink (Imperial): 0.839 in
  • Inner Diameter After Shrink (Metric): 21.3 mm
  • Inner Diameter Before Shrink (Imperial): 2.85 in
  • Inner Diameter Before Shrink (Metric): 72.4 mm
  • Material: EPDM Rubber
  • Maximum Connector Length: 2.0 in
  • Maximum Connector Length (Metric): 50.8 mm
  • Maximum Operating Temperature (Celsius): 90 Degree Celsius
  • Maximum Operating Temperature (Fahrenheit): 194 Degree Fahrenheit
  • Minimum Operating Temperature (Celsius): -40 Degree Celsius
  • Minimum Operating Temperature (Fahrenheit): -40 Degree Fahrenheit
  • Model: Cold-shrink
  • Number of Conductors: 1
  • Operating Temperature (Celsius): -40 up to +90┬░C
  • Overall Diameter (Metric): 67.8 mm
  • Overall Length (Imperial): 6 in
  • Overall Length (Metric): 152.4 mm
  • Product Color: Black
  • Product Type: Splice
  • Relaxed Tube Length: 6 in
  • Relaxed Tube Length (Metric): 152.4 mm
  • RoHS EU Comments: RoHS 2011/65/EU compliant without exemption
  • Shrink Ratio: 2:1
  • Splice Type: Cold Shrink
  • UL Approval: No
  • Voltage: 1 kV
  • Voltage Application: Low Voltage
  • Wall Thickness after Shrinking: 4.6 mm
  • With Inner Glue: No


UPC 05400709917
Item Long Description 3M Cold Shrink Connector Insulators 8420 and 8430 Series are designed using 3Ms proprietary cold shrink delivery system. Products are supplied prestretched on a removable core for efficiency and ease of installation. Removal of the core (unwinding) after positioning the splice allows the product to shrink into position forming a moisture-tight seal. The live memory action of the specially formulated EPDM material promotes a permanent, durable environmental seal and insulation, with a typical operating temperature range from -40194F (-4090C). The 8420 insulator meets requirements of ANSI C119-1 and Western Underground Guide 2.14 for secondary splices rated up to 1 kV. Applications: Primary electrical insulation for all solid dielectric (rubber and plastic) insulated wire and cable splicing rated to 1000 V. Good for repairs and environmental sealing for communication and other non-electrical applications. Important: Use insulation jacket or connector O.D. for final ordering criteria. * Mastic pads included for cable O.D. build-up. ** Kit contains adapters. *** These sizes are listed for availability only and are not designed to be used as primary insulation. These tubes are for conduit sealing and breakouts. ****Maximum connector length: 5.625 Point of Purchase packaging designated by P. Example: 8423-6P
GTiN 00054007099178
Type Cold Shrink Splice
Material Aluminum; Copper
Family Brand Name 3M
Length 0.229 m
Color Black
Voltage 1 kV
Shrink Ratio 2:1
Conductor Material Aluminum,Copper
Diameter 67.8 mm
Max Operating Temperature 194 degrees F
Overall Length 6 in
Applications Insulation, Mechanical Protection, Repair

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