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Black heat-shrink tubing spool 4 ft length 0.125 in ID pack of 25

3M

3M Shrink Tubing 4 ft Black 0.125 in ID PK25

SKU CH-30TE-EP0K7

Adhesive-lined polyolefin tubing shrinks 2.5:1 to seal and insulate 22–16 AWG wires, supplied as 25 pieces of 4 ft length

  • Seals 22–16 AWG wires with adhesive-lined polyolefin
  • 5:1 shrink ratio fits snugly over connectors
  • Withstands −67 °F to 230 °F environments
  • Resists acids and alkalis for harsh conditions
  • 25 pieces × 4 ft covers multiple jobs

3M Heat Shrink Tubing 4 ft Pack

This 3M heat shrink tubing comes in a 48-inch length with a 0.125-inch inside diameter before shrinking. The semi-rigid polyolefin material includes an adhesive lining and offers a 2.5:1 shrink ratio. It is designed for wire sizes ranging from 22 AWG to 16 AWG. The tubing withstands temperatures from -67 to 230 degrees Fahrenheit.

Suited for insulated splices and environmental seals

The adhesive-lined wall creates a moisture-resistant barrier after shrinking, making it suitable for automotive and marine wiring repairs. Acid and alkali resistance adds durability in harsh chemical environments. Buyers needing a higher shrink ratio or tubing without adhesive should consider alternative products. The 600-volt dielectric strength covers low-voltage signal and power circuits.

Requires a heat source above 275 degrees F

A heat gun or torch activates the adhesive and shrinks the tubing to a 0.02-inch inside diameter with a 0.02-inch wall thickness. The 25-piece pack provides multiple lengths for batch work or future maintenance. The thin-wall design adds minimal bulk to wire bundles inside conduit or loom. Ensure the wire gauge falls within the 22 to 16 AWG range for proper fit.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $179.99
Pricier than about 75% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand name3M

Questions about this item

What wire gauges can I use with this 0.125 in ID tubing?

It covers 22 AWG to 16 AWG, so conductors in that range will fit before shrinking.

Will the adhesive bond to my existing polyolefin insulation?

Yes, the adhesive-lined wall fuses to polyolefin and other common wire jackets when heated.

How do I confirm the 2.5:1 shrink ratio was achieved?

Measure the recovered inside diameter — it should be about .02 in, and the wall thickness should read .02 in.

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