3M 7000133603 Heat Shrink Tubing FP301 1/4 in 48 in Black

Product Description

The 3M 7000133603 is a thin-wall heat shrink tubing from the FP-301 series, designed for electrical insulation, bundling, and strain relief in industrial and military wiring applications. Supplied in a 48-inch length with a 1/4-inch recovered diameter, this tubing provides a reliable balance of electrical insulation, physical protection, and chemical resistance. The black color aids in UV resistance and is a common standard for electrical harness work. Licensed electricians, military contractors, and industrial maintenance technicians are the primary installers of this product type.

FP-301 thin-wall heat shrink tubing is suited for wire bundling, termination insulation, connector backshells, and general wire harness protection across a broad range of industrial and military applications. Its thin-wall construction allows for clean, low-profile coverage over conductors, terminals, and splices. The 48-inch stick length makes it practical for bench-cutting to fit specific termination lengths in production or field repair environments.

Key Features

• Thin-wall construction provides low-profile insulation over conductors and terminals
• 1/4-inch diameter sizing fits a wide range of standard wire gauges and small connector backshells
• Black color offers standard electrical harness identification and UV resistance
• Balanced electrical, physical, and chemical properties suited for industrial and military use
• 48-inch length allows field or bench-cutting to application-specific sizes

Compatibility

Designed as an OEM-style heat shrink solution for general industrial and military wiring applications requiring thin-wall tubing at a 1/4-inch recovered diameter.

Installation Notes

Installation is typically performed by licensed electricians or trained wire harness technicians. De-energize all circuits before applying heat shrink tubing to any live wiring assembly. Use a calibrated heat gun set to the appropriate temperature range for the tubing material — open flame torches are not recommended, as uneven heat can damage tubing integrity. Work practices should comply with applicable NEC requirements and military wiring standards where applicable.