3M FP0.125BK500FT-L FP-301 Heat Shrink Tubing 500 Ft

Product Description

The 3M FP0.125BK500FT-L is a thin-wall, flexible polyolefin heat shrink tubing supplied on a 500-foot spool in black. Part of the 3M FP-301 series, this tubing is rated for 600 volts and carries both UL and CSA approvals, making it suitable for electrical insulation, bundling, and strain relief applications in commercial and industrial wiring work. It features a minimum expanded diameter of 0.125 inches, a maximum recovered diameter of 0.062 inches, and a wall thickness of 0.02 inches. Electricians and wire harness technicians reach for FP-301 tubing when they need a lightweight, flexible solution that conforms tightly to conductors and splices after heat is applied.

This tubing is appropriate for low- and medium-voltage electrical work where a clean, durable insulating sleeve is required. Common applications include wire splicing, connector insulation, cable identification, and environmental protection of terminations in control panels, motor wiring, and equipment harnesses. The 500-foot continuous spool format suits contractors and shop technicians who cut tubing to length on demand for repetitive production or service work. The black color supports heat absorption during shrink and provides a uniform finished appearance on dark-jacketed cable assemblies.

Key Features

• Flexible polyolefin construction for conformability over irregular surfaces and bends
• Minimum expanded diameter of 0.125 inches with maximum recovered diameter of 0.062 inches
• 600-volt voltage rating suitable for standard electrical insulation tasks
• UL and CSA approved for use in code-compliant electrical installations
• 0.02-inch wall thickness provides insulation without adding significant bulk
• 500-foot spool format reduces per-foot cost for high-volume or recurring work
• Manufactured in the United States

Compatibility

Designed as an OEM-style replacement and general-use heat shrink tubing for 1/8-inch cable size applications requiring UL- and CSA-listed flexible polyolefin sleeving at 600 volts.

Installation Notes

Installation is performed by licensed electricians or trained wire harness technicians following applicable NEC guidelines for insulation and splicing. De-energize all circuits before applying tubing to conductors or terminations. Apply heat evenly using a heat gun set to an appropriate temperature range for polyolefin materials, working from the center outward to prevent air pockets. Do not use an open flame, as uncontrolled heat can damage tubing integrity or adjacent components.

Technical Specifications

• Material: Flexible Polyolefin
• Color: Black
• Voltage Rating: 600 volts
• Minimum Expanded Diameter: 0.125 inches
• Maximum Recovered Diameter: 0.062 inches
• Cable Size: 1/8 inch
• Wall Thickness: 0.02 inches
• Spool Length: 500 feet
• Certifications: UL, CSA
• Package Dimensions: 21.59 inches L x 22.15 inches W x 7.88 inches H
• Country of Origin: United States

Standard Information

• Brand: 3M
• Manufacturer Part Number: FP0.125BK500FT-L