3M 8428-12 Cold Shrink Connector Insulators
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Manufacturer 3M
Mfg Catalog # 8428-12
Crawford Part # 263


  • 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: UniShield® - Wire Shield - Tape Shield - Non-shielded
  • Cable Type: Power Cable
  • Color Family: Black
  • Conductor Material: Aluminum - Copper
  • Conductor Size Range: 500-800 kcmil
  • Conductor Size Range (Metric): 300-400 mm²
  • Conductor Sizes: 750 kcmil - 700 kcmil - 800 Kcmil - 650 kcmil - 500 kcmil - 600 kcmil
  • Halogen Free: No
  • Inner Diameter After Shrink (Imperial): 0.949 in
  • Inner Diameter After Shrink (Metric): 24.1 mm
  • Inner Diameter Before Shrink (Imperial): 1.937 in
  • Inner Diameter Before Shrink (Metric): 49.2 mm
  • Material: EPDM Rubber
  • Maximum Connector Length: 8.0 in
  • Maximum Connector Length (Metric): 203.2 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
  • Overall Length (Imperial): 12 in
  • Overall Length (Metric): 304.8 mm
  • Product Color: Black
  • Product Type: Splice
  • Relaxed Tube Length: 12 in
  • Relaxed Tube Length (Metric): 304.8 mm
  • RoHS EU Comments: RoHS 2011/65/EU compliant without exemption
  • Splice Type: Cold Shrink
  • Voltage: 1 kV
  • Voltage Application: Low Voltage


UPC 05400709056
Product Description Quick and easy installation, no special tools and no heat requiredSeals tight, retains resiliency and pressureAccommodates a wide range of cable sizesResists acids, alkalis and ozoneNo mastic or tape required to seal
MDM Pkg GTiN 00054007090564
Length 12 in
Size 500 kcmil; 600 kcmil; 650 kcmil; 700 kcmil; 750 kcmil; 800 kcmil
Color Black
Voltage 1 kV
Type Cold Shrink Splice
Splice Type Cold Shrink
Material Aluminum; Copper
Product Type Splice
Number of Conductors 1
Conductor Size 800 MCM
Cable Type Power Cable
Family Brand Name 3M
Max Operating Temperature 194 degrees F
Overall Length 12 in
Applications Insulation, Mechanical Protection, Repair

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