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Ten black heat-shrink tubes six inches long adhesive lined 3 to 1 shrink ratio

3M

3M EPS300 3/16" 6" Black Adhesive Heat Shrink Tubing 10pk

SKU CH-GSFY-1G3Q8

Adhesive-lined polyolefin tubing shrinks 3:1 to seal and protect 20-18 AWG wires from -67 °F to 230 °F

  • TypeCable Management & Conduit
  • 3:1 shrink ratio seals 20-18 AWG wires
  • Adhesive lining bonds and waterproofs connections
  • Polyolefin resists abrasion, acid and alkali
  • Operates from -67 °F to 230 °F
  • Ten six-inch black pieces per pack

3M EPS300 Heat Shrink Tubing 10-Pack

This 3M EPS300 pack contains ten pieces of black adhesive-lined heat shrink tubing. Each piece measures six inches long and fits wire sizes from 20 AWG to 18 AWG. The polyolefin material shrinks at a 3:1 ratio to seal and protect electrical connections. It is suited for automotive, marine and general electrical repairs where environmental sealing is required.

Thermals and Operating Range

The tubing withstands continuous temperatures from minus 67 degrees to 230 degrees Fahrenheit. Minimum shrink temperature is 250 degrees Fahrenheit, reached with a standard heat gun. Flame-retardant polyolefin resists burning and self-extinguishes. Adhesive lining flows during shrinking to create a watertight bond without adding bulk or stiffness to the harness.

Upgrade from Standard Tubing

This product replaces basic thin-wall tubing that lacks adhesive sealing. The 3:1 shrink ratio covers a wider range of splice diameters than 2:1 alternatives. The jump is worth it when connections face moisture, vibration or chemical exposure. Buyers who need clear tubing for visual inspection or a higher voltage rating should look elsewhere.

Highlights

  • 3:1 shrink ratio seals 20-18 AWG wires
  • Adhesive lining bonds and waterproofs connections
  • Polyolefin resists abrasion, acid and alkali
  • Operates from -67 °F to 230 °F
  • Ten six-inch black pieces per pack

Specifications

Brand3M
TypeCable Management & Conduit

Questions about this item

How do I install the 3/16" heat shrink tubing and what step is often missed?

Slide the 6" tube over the 20-18 AWG wire, then apply heat above 250°F until the 3:1 shrink ratio reduces the 0.19" inner diameter to 0.06" and adhesive flows; the missed step is heating long enough for the inner adhesive layer to fully melt and seal.

What maintenance or replacement will the adhesive-lined polyolefin tubing need later?

The tubing is rated from -67°F to 230°F and resists abrasion, acid and alkali; inspect seals after thermal cycling or chemical exposure and replace any piece showing cracked adhesive or reduced 0.02" wall thickness.

What limit appears first during sustained high-temperature use?

Continuous exposure near the 230°F upper temperature limit will degrade the polyolefin and adhesive bond before the 3:1 shrink memory or 0.02" recovered wall thickness are affected.

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