3M 7010321000 Heat Shrink Thin-wall Tubing 3/4 in Red 48 in

Product Description

The 3M 7010321000 is a heat shrink thin-wall tubing sold in a 48-inch length, designed for insulating, color-coding, and protecting wire terminations, splices, and cable bundles in electrical and low-voltage wiring applications. Constructed from flexible polyolefin, it conforms tightly to irregular surfaces when heat is applied, creating a clean, durable sleeve. The red color designation supports polarity and circuit identification in multi-conductor installations. This tubing is sized at 3/4 inch and is handled by electricians, HVAC technicians, and panel builders who need reliable, lightweight insulation on conductors and connections.

This tubing is suited for residential and light commercial electrical work, HVAC control wiring, and panel assembly environments where a low-profile insulation sleeve is required. The thin-wall profile keeps bundle diameter compact, making it practical in tight wire chases, junction boxes, and terminal enclosures. It ships in a 48-inch small spool format, sized for job-site use or bench work.

Key Features

• Flexible polyolefin construction conforms to irregular conductor and connector shapes after shrinking
• Red color coding supports polarity identification and circuit tracing in multi-wire installations
• Thin-wall profile minimizes added bulk to splices and terminations
• 48-inch length provides enough stock for multiple terminations from a single piece
• Lightweight at 0.12 pounds per unit, suitable for portable job-site use

Compatibility

Designed as an OEM-style heat shrink sleeve for general electrical insulation and strain relief applications on conductors, splices, and terminal connections where a 3/4-inch thin-wall polyolefin tubing is specified.

Installation Notes

Installation is performed by licensed electricians or qualified HVAC technicians following applicable NEC guidelines for insulation and conductor protection. Power down and de-energize all circuits before applying heat shrink over live terminations or splices. Use a heat gun set to the appropriate temperature range for polyolefin tubing — avoid open flame sources, which can cause uneven shrinkage or damage the material. Slide tubing over the conductor or splice before terminating where possible, as it cannot be applied after connectors are in place.

Technical Specifications

• Material: Flexible polyolefin
• Size: 3/4 inch
• Length: 48 inches
• Color: Red
• Weight: 0.12 pounds
• UOM: Each
• Minimum Order Quantity: 50
• UPC: 00051128598672

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010321000