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3M 8420 Black Cold Shrink Insulator, 2-1/0 AWG, 61 mm, 203 mm

ID: 3M8425-8 Mfr ID: 3M8425-8
Manufactured by: 3M Electrical OEM Materials
3M™ Cold Shrink Connector Insulators 8420 Series are open-ended, tubular, rubber sleeves which are factory expanded and assembled onto a removable core. The core is removed after the tube has been positioned for installation over an inline connection, terminal lug, etc., allowing the tube to shrink and form a water-resistant seal. The insulating tube is made of EPDM rubber which does not contain chlorides or sulfur.
Special Handling Required

USD $21.30 / EA

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1-9 $21.30 / EA
10-19 $19.25 / EA
20-39 $17.56 / EA
40+ $14.94 / EA

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This item may be sold in units of 1.

  • Brand name :  3M
  • Series :  8420-Black
  • Item Name :  Cold Shrink Insulator
  • Short Desc :  INSULATOR,COLD SHRINK 3M 8425-8
  • Packaging :  10/Case
  • UPC :  00054007423911
  • UNSPSC :  40183009

3M™ cold shrink tubes are designed using a unique cold shrink delivery system. Products are supplied prestretched on a removable core for efficiency and ease of installation. Removal of the core (unwind) after positioning allows the product to shrink into position forming a moisture-tight seal. The live memory action of the specially formulated material ensures a permanent, durable environmental seal and insulation.


WARNING: California Proposition 65 - Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Design & Construction
Color Black 
Insulation Material Polyolefin Foam, Copper, EPDM-Rubber 
Environmental Condition
Temperature Rating 40  deg C
Electrical Properties
Dielectric Strength 365  V/mil
Voltage Rating 1  kV
Physical Properties
Gauge 2  AWG
Length 203  mm
Inside Diameter 61  mm

3M 8420 Black Cold Shrink Insulator, 2-1/0 AWG, 61 mm, 203 mm Safety Data Sheet (SDS) 

3M 8420 Black Cold Shrink Insulator, 2-1/0 AWG, 61 mm, 203 mm Video URL 

3M 8420 Black Cold Shrink Insulator, 2-1/0 AWG, 61 mm, 203 mm Brochure 

3M 8420 Black Cold Shrink Insulator, 2-1/0 AWG, 61 mm, 203 mm Catalog 

Features :

  • Simple installation, requires no tools
  • Accommodates a wide range of cable sizes
  • No torches or heat required
  • Good thermal stability
  • Seals tight, retains its resiliency and pressure even after prolonged years of aging and exposure
  • Excellent wet electrical properties
  • Tough rubber formulation withstands backfilling
  • Water-resistant, meets the water seal requirements of ANSI C119.1
  • No mastic or tape required to seal
  • Resists acids and alkalis, resists ozone
  • Inside Diameter: 61 mm after heat-shrink, 20.9 mm before heat-shrink
  • Length: 203 mm, 3 Inch (Maximum Connector Length), 8 Inch (Relaxed Tube Length)
  • Gauge: 2-1/0 AWG
  • Temperature Rating: -40 to 90 deg C

Applications :

  • Primary Electrical Insulation for All Solid Dielectric Insulated Wire and Cable Splicing Rated Up to 1000V
  • Direct Burial and Submersible
  • For Indoor and Outdoor Use
  • Physical Protection and Moisture Sealing for Air-Insulated Connectors and Lugs Such as Spacer Cable and Lug Connections to Bus Bar, Insulation of Secondary Splices, Copper or Aluminum Conductors, Relocation of Service, Dig-In Repairs, Sheath Repairs, Environmental Sealing
  • Communication and Other Non-Electrical Applications