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The 3M 7100020159 is a thin-wall polyolefin heat shrink tubing sold on a 500-foot bulk spool. Designated as FP-301, this tubing delivers a reliable balance of electrical insulation, physical durability, and chemical resistance suited for wiring protection, bundling, and strain relief in industrial and military environments. The 1/8-inch recovered diameter makes it well-suited for small-gauge conductors and terminal insulation. It ships in blue for color-coded circuit identification. Electricians, aerospace technicians, and field service crews working with wire harnesses and cable assemblies are the primary installers.
FP-301 thin-wall heat shrink tubing is used across a broad range of applications including industrial control wiring, military electronics, panel builds, and general electrical assembly work. The bulk 500-foot spool format is practical for shops and contractors who perform high-volume wire termination and harness fabrication rather than occasional repair work. The blue color aids in visual identification of circuits or conductors within a wiring system.
Designed as a general-purpose thin-wall heat shrink tubing for industrial wiring, military electronics, and electrical assembly applications requiring 1/8-inch recovered diameter insulation.
Installation is typically performed by electricians or electronics technicians using a calibrated heat gun set to the appropriate shrink temperature for FP-301 polyolefin material. De-energize all circuits completely before applying heat shrink over conductors, terminals, or splices. Avoid open-flame heat sources, as uncontrolled heat can damage the tubing or underlying insulation. Follow applicable NEC guidelines and any project-specific military or industrial wiring specifications.
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