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The 3M 7100053331 is a thin-wall heat shrink tubing sold in a 100-foot spool, designed for electrical insulation, bundling, and strain relief across industrial and military applications. Built under the FP-301 series, this tubing delivers a reliable balance of electrical, physical, and chemical properties suited to demanding service environments. The blue color coding aids in identification during installation and maintenance. Electricians, MRO technicians, and industrial maintenance professionals reach for this tubing when a clean, durable, and consistent heat-shrink sleeve is required on wire terminations, splices, and harness assemblies.
FP-301 thin-wall heat shrink tubing is used across a broad range of applications including wire harnessing, connector backshell protection, lead identification, and mechanical protection of conductors in both commercial and military-grade assemblies. The blue color variant is commonly used in color-coded wiring systems to designate specific circuit groups or voltage levels. This spool format is well suited to bench work and production environments where large quantities of tubing are cut to length as needed.
Designed as an OEM-style heat shrink sleeve for use on conductors, terminals, and splice points in industrial and military wiring assemblies where a 1.5-inch nominal diameter thin-wall tubing is required.
Heat shrink tubing of this type is installed by licensed electricians or trained wiring technicians following applicable NEC guidelines and project specifications. De-energize all circuits before applying tubing to any conductor or termination. Use a calibrated heat gun set to an appropriate shrink temperature and apply heat evenly around the tubing circumference to achieve a uniform, void-free shrink. Avoid open-flame heat sources, which can scorch the tubing or damage adjacent components.
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