3M 7010304230 Heat Shrink Multi-wall Polyolefin Tubing 3/16 in

Product Description

The 3M 7010304230 is a semi-rigid, multiple-wall heat shrink tubing designed for reliable wire and cable terminations in electrical and electronics applications. Constructed from co-extruded, selectively cross-linked polyolefin, it features a 2.5:1 shrink ratio and an integral meltable inner wall that flows when heat is applied to create a sealed, moisture-resistant bond around conductors and connections. Each stick measures 48 inches in length. Licensed electricians and electronics technicians use this tubing for wire splices, terminations, and connector backshells where environmental sealing is required.

This tubing is suited for residential, commercial, and industrial electrical work where a dual-wall construction provides both mechanical protection and adhesive sealing in a single step. Typical applications include protecting solder joints, butt splices, and wire terminations on control wiring, automotive harnesses, and low-voltage electrical systems. The semi-rigid polyolefin construction maintains shape during handling before shrinking, which helps with accurate positioning before heat is applied.

Key Features

• 2.5:1 shrink ratio provides secure conformance to a range of conductor diameters
• Co-extruded semi-rigid polyolefin construction with selectively cross-linked walls
• Meltable inner wall creates an integral adhesive seal when heat is applied
• 48-inch stick length allows field cutting to required lengths
• Dual-wall design delivers both mechanical protection and moisture resistance in one application

Compatibility

Designed as an OEM-style heat shrink solution for wire splices, cable terminations, and connector protection in low-voltage electrical and control wiring applications where a sealed, dual-wall tubing is required.

Installation Notes

Installation is performed by licensed electricians or qualified technicians following applicable NEC guidelines. De-energize all circuits before applying tubing to conductors or terminations. Use an appropriate heat gun set to the recommended temperature range for polyolefin tubing — avoid open flame, which can cause uneven shrinking or material damage. Allow the tubing to cool fully before handling or applying mechanical stress to the connection.

Technical Specifications

• Shrink Ratio: 2.5:1
• Wall Type: Multiple-wall, semi-rigid with meltable inner wall
• Material: Cross-linked polyolefin
• Recovered Diameter: 3/16 inch
• Length per Stick: 48 inches
• Weight: 0.11 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 12
• UPC: 00051128597132

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010304230