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Ten black polyolefin heat-shrink tubes, 6-inch length, thin-wall 2:1 ratio

3M

3M FP301 3/8" 6" Black 10 PCS Heat Shrink Tube

SKU CH-A2ZQ-AHJ8N

Ten 6-inch pieces of thin-wall polyolefin tubing shrink 2:1 to protect 12-8 AWG wires from -67 °F to 275 °F

  • 2:1 shrink ratio fits 12-8 AWG wires securely
  • Thin-wall polyolefin resists acids, alkalis and solvents
  • Flame-retardant material withstands -67 °F to 275 °F
  • 600 V dielectric strength protects electrical connections
  • Pack of 10 black 6-inch tubes ready to use

3M FP301 Heat Shrink Tubing 10 Pack

This 3M FP301 heat shrink tubing comes in a pack of ten six-inch pieces designed for electrical insulation and wire protection. The thin-wall polyolefin material suits electricians, automotive technicians and hobbyists working with 12 AWG to 8 AWG conductors. Each piece shrinks at a 2:1 ratio from 0.38 in to 0.19 in inner diameter. The black tubing is flexible, flame retardant and resistant to acids, alkalis and solvents.

Thermal Performance and Power Ratings

The tubing withstands continuous operating temperatures from -67 Degrees to 275 Degrees F and requires a minimum shrink temperature of 212 Degrees F. It carries a dielectric strength of 600 V, providing reliable electrical insulation for low-voltage wiring. The thin wall measures 0.03 in after shrinking, adding minimal bulk while maintaining protection. No adhesive lining is present, so connections rely on mechanical shrink force alone.

Sustained Load Behaviour

Under prolonged thermal exposure the polyolefin retains flexibility and flame-retardant properties across the full rated temperature range. The material resists degradation from common automotive fluids and solvents encountered in service. Because the tubing is not adhesive lined, long-term sealing depends on proper sizing and shrink technique rather than bond strength. California Proposition 65 applies due to chemical content.

Highlights

  • 2:1 shrink ratio fits 12-8 AWG wires securely
  • Thin-wall polyolefin resists acids, alkalis and solvents
  • Flame-retardant material withstands -67 °F to 275 °F
  • 600 V dielectric strength protects electrical connections
  • Pack of 10 black 6-inch tubes ready to use

Specifications

Brand3M

Questions about this item

How do I install the 3M FP301 3/8" heat-shrink tubing and what step is often missed?

Slide the 6 in tube over the wire, then apply heat until the 0.38 in inside diameter shrinks to 0.19 in; the step people miss is reaching the 212 °F minimum shrink temperature so the wall fully recovers to 0.03 in thickness.

What maintenance or replacement will the 3M FP301 tubing need later?

The polyolefin tubing is acid, alkali and solvent resistant with no adhesive liner, so it requires no scheduled maintenance; replace only if physical damage or prolonged exposure beyond the -67 °F to 275 °F range degrades the material.

What limit appears first when the 3M FP301 tubing is used continuously at high temperature?

The 275 °F upper temperature rating is the first limit; sustained operation above this point can compromise the flame-retardant polyolefin and its 600 V dielectric strength before any other property fails.

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