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The 3M 7010398983 is a multiple-wall polyolefin heat shrink tubing designed to provide environmental protection for electronic components, wire splices, wire bundles, and harness breakouts. Sold as the EPS400 series, this tubing features a multi-layer polyolefin construction that seals and protects connections when heat is applied. Each piece measures 6 inches in length with a 0.450-inch diameter. The pack contains 10 pieces and weighs 0.25 pounds. Electricians, harness technicians, and electronics assemblers use this tubing to protect and insulate connections in demanding environments.
This heat shrink tubing is suited for residential and commercial electrical applications where reliable environmental sealing is required. It is commonly used in wire harness assembly, automotive and industrial wiring, and panel wiring where moisture, abrasion, and contaminant protection are priorities. The 6-inch cut length makes it practical for terminations and splice points across a wide range of conductor sizes and bundle configurations.
Designed as an OEM-style replacement and standard-use heat shrink tubing for electrical wire splices, harness breakouts, and electronic component protection in residential and commercial wiring applications.
Installation is typically performed by licensed electricians or trained harness technicians. Ensure the circuit or assembly is fully de-energized before applying heat shrink tubing over any splice or termination. Use a calibrated heat gun at the appropriate shrink temperature for polyolefin material; open flame tools are not recommended as they risk uneven shrinkage or damage. Follow applicable NEC guidelines for wire insulation and splice protection requirements.
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