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Grey rubber cold-shrink tube 7.5 in long 0.72 in diameter medium wall

3M

3M 8445-7.5 Cold Shrink Tube Medium Wall 0.72 in 7.5 in electrician tool

SKU CH-F89N-SC18Q

Medium-wall EPDM rubber tube shrinks from 0.72 in to 0.35 in for 2 AWG to 1/0 AWG wire insulation

  • Medium-wall EPDM rubber insulates from -67 °F to 500 °F
  • Shrinks from 0.72 in to 0.35 in for a tight seal
  • 11 in wall thickness after shrinking adds mechanical protection
  • UV-resistant grey tubing withstands outdoor exposure
  • 5 in length suits 2 AWG to 1/0 AWG wire sizes

Medium-wall cold-shrink tubing for electricians

3M 8445-7.5 Cold Shrink Tube is a medium-wall EPDM rubber sleeve designed for wire insulation and environmental sealing. It fits wire sizes from 2 AWG to 1/0 AWG and installs without heat tools, making it practical for field electricians and maintenance crews who need reliable splice protection.

Sustained-load behaviour and environmental limits

The tubing operates continuously from -67 Degrees to 500 Degrees F and provides a dielectric strength of 1,000 V. After shrinking the inner diameter reduces from .72 in to .35 in with a wall thickness of .11 in, and the material is UV light-resistant for long-term outdoor exposure.

Installation notes and common issues

Each piece is 7.5 in long and supplied individually, so installers must select the correct length for each splice. The product has no adhesive lining and no flame-retardant rating, which limits its use in applications that require a sealed bond or specific fire-safety compliance.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $22.99
Cheaper than about 89% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand name3M

Questions about this item

Does the 3M 8445 cold-shrink tube generate heat or noise during continuous use?

The tube is a passive EPDM rubber sleeve with no moving parts or power draw, so it produces zero heat and no audible noise once installed.

What wire sizes must I already have for the 0.72 in I.D. tube to seal correctly?

The product is rated for use with 2 AWG through 1/0 AWG conductors; the supplied tube will only shrink onto wires within that range.

Will the 7.5 in length and 0.11 in recovered wall work over my existing 2 AWG splices?

After shrinking to 0.35 in I.D. with a 0.11 in wall, the 7.5 in tube covers standard 2 AWG to 1/0 AWG splice lengths and provides the specified dielectric strength.

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