Heavy Wall-Adhesive 3:1

Heavy Wall Adhesive-Lined Direct Burial 3:1 Heat Shrink Tubing

For the harshest environments — underground, submersible, or outdoor installations — ElecDirect’s heavy wall adhesive-lined heat shrink tubing delivers maximum sealing, insulation, and mechanical protection. Its dual-wall polyolefin construction ensures long-term reliability even under moisture, dirt, corrosion, abrasion, or impact.

Featuring a 3:1 shrink ratio, the tubing recovers to about one-third of its supplied inner diameter when heated (≈ 120 °C), forming a tight, conformal fit around cable jackets, splices, connectors, or irregular geometries.

The combination of a thick polyolefin outer wall and a hot-melt adhesive inner liner creates a durable, moisture- and corrosion-resistant seal. Rated for 600 V, 90 °C continuous use and designed to meet CSA, ICEA, and NEMA insulation and durability standards, this heavy-wall tubing is built for demanding applications.

• • Heavy wall, adhesive-lined, dual-wall polyolefin tubing for maximum protection
• • 3:1 shrink ratio — shrinks to ~33% of supplied inner diameter for tight sealing
• • Moisture-resistant, corrosion-resistant environmental seal — ideal for burial, submersible, or outdoor use
• • High-impact, abrasion, solvent and chemical resistance — rugged mechanical protection
• • 600 V rating, 90 °C continuous use temperature, dielectric strength approx. 500 V/mil
• • Meets UL, CSA, ICEA, NEMA insulation and thickness standards
• • Perfect for underground cables, URD, submersible wiring, outdoor lighting, marine, industrial, and commercial installations

When you need a permanent, sealed, and durable solution for heavy-duty cable protection, choose ElecDirect’s heavy-wall adhesive-lined direct-burial heat shrink tubing — engineered for reliability and built to last.