3M Cold Shrink Insulator 8429-12, 900-1000 kcmil (500 mm²)

3M Cold Shrink Insulator 8429-12, 900-1000 kcmil (500 mm²)

Regular price

$68.99 USD & FREE Shipping.
  • 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 EPDM rubber which contains no chlorides or sulfur
  • Withstands temperatures of -40 to 194 degrees F (-40 to 90 degrees C)

3M Cold Shrink Connector Insulators 8420 and 8430 Series are designed using 3M’s 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 -40–194°F (-40–90°C). 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.

3M Cold Shrink Insulator 8429-12, 900-1000 kcmil (500 mm²)

General Information
Part Number
Product Type
Cold Shrink
Country of Origin
United States
California Residents
Proposition 65 Warning
Physical Characteristics
304.8 mm
0.36 kg
0.80 lb
EPDM Rubber
Tubing Type: Heavy-Duty

Flame Retardant: No

Halogen Free: No

Inner Diameter Before Shrink: 2.85 in / 72.4 mm

Inner Diameter After Shrink: 0.839 in / 21.3 mm

Operating Temperature (C): - 40 to 90 C

Operation Temperature (F): - 40 to 194 F

Conductor Sizes: 1000 kcmil - 900 kcmil / 456 mm²

Maximum Connector Length: 8 in / 203.2 mm

Shelf Life: 60 Months

Shrink Ratio: 2:1

Voltage: 1 kV
Why would you use this tool for ?
About manufacturer

3M is one of many examples of the classic American success story. They went into business to mine a specific mineral and they didn’t have any luck with that, so instead, upon receiving lemons, they made life take the lemons back by innovating and creating new, unexpected products that eventually led to success. That spirit of innovation continues to this day as they have developed safety equipment, specialty construction and testing equipment, PPE, accessories for visibility and so much more! As avid tool users, handymen, construction workers and more, there are certainly many 3M products that will be of use to you Tool Junkies out there!