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Black rubber cold shrink tube 1.94 in diameter 12 in length

3M

3M 8428-12 Cold Shrink Tube 1.94 in 12 in

SKU CH-J0YB-Z9VYT

EPDM rubber cold-shrink tube covers 500-800 MCM wire, shrinking from 1.94 in to .95 in over a 12 in length

  • Color familyBlack
  • Product typeCable Management & Conduit
  • Cold shrink design installs without heat tools
  • EPDM rubber withstands -40 °F to 194 °F
  • UV-resistant black jacket suits outdoor exposure
  • Fits 500 MCM to 800 MCM conductors
  • 12 in length covers extended splice areas

Cold Shrink Tube for Large Cable Splices

The 3M 8428-12 is a medium-wall cold shrink insulator designed for wire sizes from 500 MCM to 800 MCM. It installs without heat tools, making it practical for field repairs or permanent splices on large conductors. The tube is supplied as individual pieces ready for immediate use.

EPDM Rubber Withstands Wide Temperature Range

The EPDM rubber material operates from -40 degrees to 194 degrees F and provides UV light resistance for outdoor exposure. It carries a dielectric strength of 1,000 V and is not flame retardant. No adhesive lining is present, so the seal relies on the shrink force alone.

Slides Over 1.94 in Diameter Before Shrinking

The tube arrives with a 1.94 in inside diameter and shrinks to 0.95 in after the core is removed. Its 12 in length covers standard splice areas on the rated wire range. Builders must verify the final diameter fits their specific cable insulation before installation.

How it compares

Measured against everything we stock in Wire Connectors & Cable Ties, at today’s prices. Recalculated every night.

Price $59.99
Pricier than about 87% of the 1,040 comparable items (median $13.99).

Specifications

Product
Brand name3M
Color familyBlack
Product typeCable Management & Conduit

Questions about this item

How do you install the 3M 8428-12 cold shrink tube and what step is often missed?

Slide the pre-expanded tube over the cable joint, then unwind the removable core to let the EPDM rubber shrink onto 500–800 MCM wire; the step often missed is confirming the core is fully removed so the tube seats at 0.95 in I.D.

What maintenance or replacement will the 8428-12 tube need later?

The medium-wall EPDM rubber is UV-light-resistant and rated from -40 to 194 °F, so no scheduled maintenance is required; replace only if physical damage or dielectric breakdown above 1,000 V occurs.

What limit appears first on the 3M 8428-12 during sustained use?

The maximum temperature rating of 194 °F is the first limit reached under continuous load; exceeding it can degrade the rubber’s dielectric strength of 1,000 V.

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