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Black heat-shrink tubing spool, thin-wall polyolefin, 100 ft length, 2:1 shrink ratio

3M

3M FP301 3/32 in 100 ft Black Heat Shrink Tubing 2:1

SKU CH-VJ11-QPZ4G

Thin-wall polyolefin tubing shrinks 2:1 to protect 28–26 AWG wires, resists acids, solvents and flame, and operates from –67 °F to 275 °F

  • TypeCable Management & Conduit
  • Thin-wall polyolefin insulates wires down to 28 AWG
  • 2:1 shrink ratio seals connections at 212 °F minimum
  • Continuous 100 ft spool lets you cut exact lengths
  • Flame-retardant material withstands -67 °F to 275 °F
  • 600 V dielectric strength protects low-voltage circuits

What this tubing is and who it fits

3M FP301 is a thin-wall polyolefin heat-shrink sleeve supplied on a 100 ft black spool. It is intended for electrical insulation, strain relief and cable identification on wires from 28 AWG to 26 AWG. The material is flexible, flame retardant and resistant to acids, alkalis and solvents. It operates continuously from -67 °F to 275 °F.

The specification that decides fit

The critical figure is the 2:1 shrink ratio combined with an inside diameter of 0.09 in before shrinking and 0.05 in after shrinking. This matches 28 AWG to 26 AWG conductors only. The recovered wall thickness is 0.02 in and the dielectric strength is 600 V. If your wire gauge falls outside that range the tube will not seal properly.

Installation and common pitfalls

Apply heat evenly until the tubing fully recovers; the minimum shrink temperature is 212 °F. Because the product has no adhesive lining it will not bond to the wire or create an environmental seal. Overheating can scorch the thin wall, while insufficient heat leaves the sleeve loose. Cut the required length from the spool before shrinking.

Highlights

  • Thin-wall polyolefin insulates wires down to 28 AWG
  • 2:1 shrink ratio seals connections at 212 °F minimum
  • Continuous 100 ft spool lets you cut exact lengths
  • Flame-retardant material withstands -67 °F to 275 °F
  • 600 V dielectric strength protects low-voltage circuits

Specifications

Brand3M
TypeCable Management & Conduit

Questions about this item

How much insulation does the 2:1 shrink ratio actually give me on a wire?

The tubing shrinks from 0.09 in to 0.05 in inside diameter, leaving a 0.02 in wall that fits 28 AWG to 26 AWG conductors.

What does the 600 V dielectric strength limit in everyday use?

It rates the material for up to 600 V insulation; the tube itself has no adhesive liner and shrinks at a minimum of 212 °F.

Will the 100 ft spool feed through a standard benchtop dispenser?

The spool holds 100 ft of thin-wall polyolefin tubing cut to length, 0.09 in ID before shrinking, black, flexible and flame-retardant.

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