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Black polyolefin heat-shrink tubing, 48 in lengths, thin wall, 25 pieces

3M

3M FP301 3/16 in 48 in Black 25 PCS Heat Shrink Tubing

SKU CH-60ND-23ZW4

Thin-wall polyolefin tubing shrinks 2:1 to insulate 20-18 AWG wires, supplied in 25 black four-foot lengths

  • TypeCable Management & Conduit
  • 2:1 shrink ratio covers 20–18 AWG wire
  • Thin-wall polyolefin resists acids, alkalis and solvents
  • Flame-retardant material rated from -67 °F to 275 °F
  • 600 V dielectric strength protects electrical connections
  • 25 black pieces, each 48 in long

3M FP301 3/16 in 4 ft Heat Shrink

3M FP301 thin-wall heat shrink tubing comes in 48-inch black lengths with a 2:1 shrink ratio. The polyolefin material is flexible, flame retardant and resistant to acids, alkalis and solvents. Each pack contains 25 individual pieces sized for 20 AWG to 18 AWG wire. The tubing operates from -67 °F to 275 °F with a dielectric strength of 600 V.

Check wire gauge and heat source before ordering

Verify that your conductors fall within the 20 AWG to 18 AWG range so the 0.19 in inside diameter shrinks to a snug 0.09 in fit. A heat gun or similar tool capable of reaching at least 212 °F is required for proper recovery. The thin 0.02 in recovered wall adds minimal bulk but offers no adhesive lining for environmental sealing.

Replaces loose tape or oversized tubing

This tubing upgrades from electrical tape or large-diameter sleeves that leave gaps on 20-18 AWG wires. The jump is worth it when you need consistent insulation, abrasion resistance and a professional finish on harnesses, repairs or prototyping. It is not suited for cables larger than 18 AWG or for joints that require an adhesive seal.

Highlights

  • 2:1 shrink ratio covers 20–18 AWG wire
  • Thin-wall polyolefin resists acids, alkalis and solvents
  • Flame-retardant material rated from -67 °F to 275 °F
  • 600 V dielectric strength protects electrical connections
  • 25 black pieces, each 48 in long

Specifications

Brand3M
TypeCable Management & Conduit

Questions about this item

What comes in the box and do I need a heat gun separately?

The pack contains 25 pieces of 48 in black polyolefin tubing, each 3/16 in before shrinking. A heat source such as a heat gun is not included and must be supplied by the user.

Which shrink ratio and wire range does this FP301 size cover?

This tubing has a 2:1 shrink ratio and is rated for use with 20 AWG to 18 AWG wire.

What does the 600 V dielectric strength mean once the tubing is shrunk on a repair?

After shrinking at a minimum of 212 °F, the 0.02 in wall provides 600 V dielectric strength, protecting the joint from -67 °F to 275 °F.

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