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Black heavy-wall adhesive heat-shrink tube, 6 in length

3M

3M ITCSN-0400 Heavy Wall Adhesive Heat Shrink Tube Black 6 in

SKU CH-CZRG-H3NJH

Heavy-wall adhesive-lined heat-shrink tubing with a 3:1 shrink ratio for 12 to 6 AWG wire, shrinking from 0.4 in to 0.15 in with a 0.02 in wall

  • TypeCable Management & Conduit
  • Heavy wall with adhesive seals out moisture and contaminants
  • 3:1 shrink ratio fits 12 to 6 AWG wires securely
  • Cross-linked polyolefin resists abrasion, acids, alkalis and UV light
  • Operating range from -67 °F to 230 °F handles extreme environments
  • Six-inch black pieces simplify cable management and identification

Heavy-wall adhesive heat-shrink tube

3M ITCSN-0400 is a cross-linked polyolefin tube with an integral adhesive liner designed for sealing and protecting wire splices in automotive, industrial and marine environments. The heavy-wall construction provides abrasion, acid, alkali and UV resistance across a temperature range of -67 to 230 degrees F. Supplied in 6 in black pieces, it suits wire sizes from 12 AWG to 6 AWG.

Shrink ratio and dimensional limits

The tube shrinks at a 3:1 ratio from an expanded inner diameter of .4 in down to a recovered inner diameter of .15 in, with a nominal wall thickness of .02 in after shrinking. This ratio sets the practical range of conductor bundles it can encapsulate; cables larger than the pre-shrink diameter or smaller than the post-shrink diameter cannot be sealed reliably. No flame-retardant rating is specified for this formulation.

Single-spec selection criterion

The decisive specification is the 3:1 shrink ratio combined with the .4 in to .15 in diameter transition, which determines whether a given splice or connector fits inside the tube before heating and achieves a tight environmental seal after cooling. Buyers needing a different shrink ratio, a larger recovered diameter or a flame-retardant grade should select an alternative product.

Highlights

  • Heavy wall with adhesive seals out moisture and contaminants
  • 3:1 shrink ratio fits 12 to 6 AWG wires securely
  • Cross-linked polyolefin resists abrasion, acids, alkalis and UV light
  • Operating range from -67 °F to 230 °F handles extreme environments
  • Six-inch black pieces simplify cable management and identification

Specifications

Brand3M
TypeCable Management & Conduit

Questions about this item

Should I pick the 0.4 in or 0.15 in size for my wire?

The 0.4 in is the inside diameter before shrinking; after heating it becomes 0.15 in. Choose based on the wire bundle diameter you need to cover before applying heat.

What does the 3:1 shrink ratio mean once the tube is on the cable?

A 3:1 ratio means the tube shrinks to one-third of its original 0.4 in diameter, giving a tight 0.15 in seal over 12 AWG to 6 AWG wires.

Does the adhesive lining meet any specific automotive or electrical standard?

The tube uses cross-linked polyolefin with an adhesive lining, is abrasion-resistant, acid- and alkali-resistant, UV-resistant, and rated from -67 °F to 230 °F.

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