3M
3M MW-1/4-48"-BLACK-12 PCS Adhesive Lined Heat Shrink Tube
Adhesive-lined polyolefin tubing shrinks 2.5:1 to seal 16-12 AWG wires with a 600 V dielectric rating
- Adhesive lining seals out moisture and contaminants
- 5:1 shrink ratio fits 16 to 12 AWG wires
- Thin 0.03 in wall keeps bundles compact
- Polyolefin withstands -67 °F to 230 °F
- 12 pieces each 48 in long for multiple jobs
12-piece adhesive-lined heat-shrink kit
This 3M kit contains twelve individual pieces of thin-wall polyolefin tubing, each 48 inches long and coloured black. The tubing carries an inner adhesive layer that bonds when heated, creating a moisture-resistant seal around the joint. It is designed for electrical insulation and strain relief on wire sizes from 16 AWG to 12 AWG.
For wire repairs needing environmental sealing
The adhesive lining suits installers who require a water-resistant barrier on automotive, marine or outdoor wiring harnesses. The 2.5:1 shrink ratio accommodates a range of connector shapes within the stated wire gauge window. Users needing a higher shrink ratio for larger connectors, a dual-wall construction, or a different colour code should look at alternative tubing types.
2.5:1 shrink ratio covers 16-12 AWG
The tubing shrinks from a 0.25 in inner diameter down to 0.08 in, with a 0.03 in recovered wall thickness, when heated to at least 275 °F. This single ratio determines whether the tube will fit over your connector and seal tightly on the target wire gauge. Verify the connector outer diameter against the 0.25 in supplied ID before ordering.
Highlights
- Adhesive lining seals out moisture and contaminants
- 5:1 shrink ratio fits 16 to 12 AWG wires
- Thin 0.03 in wall keeps bundles compact
- Polyolefin withstands -67 °F to 230 °F
- 12 pieces each 48 in long for multiple jobs
Specifications
| Brand | 3M |
|---|
Questions about this item
How many pieces come in the 48-inch length pack?
The package contains 12 individual pieces of 4-foot tubing, each with a 2.5:1 shrink ratio and adhesive lining for environmental sealing.
What minimum temperature is needed to activate the adhesive and achieve full recovery?
A heat source reaching at least 275 °F is required to shrink the polyolefin wall to 0.03 in and activate the adhesive bond.
What wire gauges are supported by the 0.25-inch inside diameter before shrinking?
The tubing fits 16 AWG to 12 AWG conductors, shrinking down to a 0.08 in inner diameter for a tight, insulated seal.
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