3M 8425-8 Cold Shrink Connector Insulator
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Manufacturer 3M
Mfg Catalog # 8425-8
Capital Electric Part # 143


  • 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: Non-shielded - UniShield® - Tape Shield - Wire Shield
  • Color Family: Black
  • Conductor Material: Aluminum - Copper
  • Conductor Size Range: 2-1/0 AWG
  • Conductor Size Range (Metric): 35-50 mm²
  • Conductor Sizes: 2 AWG - 1 AWG - 1/0 AWG
  • Halogen Free: No
  • Inner Diameter After Shrink (Imperial): 0.24 in
  • Inner Diameter After Shrink (Metric): 6.1 mm
  • Inner Diameter Before Shrink (Imperial): 0.941 in
  • Inner Diameter Before Shrink (Metric): 23.9 mm
  • Material: EPDM Rubber
  • Maximum Connector Length: 3.0 in
  • Maximum Connector Length (Metric): 76.2 mm
  • Maximum Operating Temperature (Celsius): 90 Degree Celsius
  • Maximum Operating Temperature (Fahrenheit): 194 Degree Fahrenheit
  • Maximum Wire Gauge: 20.9mm²
  • Minimum Operating Temperature (Celsius): -40 Degree Celsius
  • Minimum Operating Temperature (Fahrenheit): -40 Degree Fahrenheit
  • Minimum Wire Gauge: 10.1mm²
  • Model: Cold-shrink
  • Number of Conductors: 1
  • Operating Temperature (Celsius): -40 up to +90°C
  • Overall Diameter (Metric): 23.9 mm
  • Overall Length (Imperial): 0 NP
  • Overall Length (Metric): 203.2 mm
  • Product Color: Black
  • Product Type: Cold shrinking
  • Relaxed Tube Length: 8 in
  • Relaxed Tube Length (Metric): 203.2 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: 3.8 mm
  • With Inner Glue: No


UPC 05400742391
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
GTiN 00054007423911
Length 203 mm
Size 1 AWG; 1/0 AWG; 2 AWG
Color Black
Voltage 1 kV
Type Cold Shrink Splice
Splice Type Cold Shrink
Material Aluminum; Copper
Product Type Cold Shrinking
Number of Conductors 1
Conductor Size 2 AWG
Cable Type Power Cable
Family Brand Name 3M
Diameter 23.9 mm
Max Operating Temperature 194 degrees F
Overall Length 203.2 mm
Applications Insulation, Mechanical Protection, Repair

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