EPCO’s Bulk Thick Wall Heat Shrink Tubing delivers premium-quality insulation for electrical connections, providing the same durability, moisture resistance, and NEC compliance as our popular packaged Thick Wall HST. Designed for direct burial applications, this tubing protects large gauge wires in residential, commercial, and industrial installations.

BENEFITS 

EPCO’s Bulk Thick Wall Heat Shrink Tubing delivers reliable, NEC-compliant insulation for large-gauge wires, providing labor savings, durability, and environmental protection in residential, commercial, and industrial applications.

• NEC Compliant & UL Listed – Meets safety standards for direct burial installations in the U.S., Canada, and international projects.
• Labor Savings – Easy to install over large cables, reducing labor time compared to multiple smaller tubing sizes.
• Customizable Lengths – Available in cut lengths from 4" to 48", allowing precise installation and reducing waste.
• Wide Cable Compatibility – Designed for 1 AWG to 3/0 AWG, accommodating high-current applications.
• Environmental Protection – Resistant to abrasion, corrosion, UV, fungi, and moisture, ensuring long-term performance.
• Cost-Efficient Bulk Option – Quoted per inch, allowing contractors to purchase exactly the length needed.
• Same Premium Quality as Packaged HST – Ensures consistent performance across all installations.  

FEATURES 

EPCO’s Bulk Thick Wall Heat Shrink Tubing is engineered for high-current wire protection, NEC compliance, and long-term environmental resistance in U.S., Canadian, and international installations. 

• Direct Burial Rated & UL Listed – Ensures safe underground installations and NEC-compliant protection.
• Customizable Lengths – Available in 4" to 48" cut lengths, providing flexibility for precise installation.
• Wide Shrink Ratio – Designed to fit 1 AWG to 3/0 AWG, reducing the number of tubing sizes needed.
• Durable Material – Provides abrasion, corrosion, UV, fungi, and moisture resistance for long-lasting performance.
• Internal Adhesive & Sealant – Creates a moisture- and soil-resistant seal when heated.
• Labor-Saving Installation – Slides easily over large cables and shrinks efficiently, saving installation time.
• Premium Performance – Same high-quality material as EPCO’s packaged Thick Wall HST tubing.
• Bulk Ordering Efficiency – Quoted per inch for cost-effective, flexible purchasing. 

TYPICAL APPLICATIONS 

• Underground Power Distribution – Provides a watertight, code-compliant seal for large-gauge feeder cable splices and terminations.
• Commercial & Industrial Electrical Systems – Used in panels, switchgear, and junction boxes for 1 AWG to 3/0 AWG conductors.
• Utility & Infrastructure Projects – Ideal for substations, vaults, transformers, and pole-mounted equipment.
• Renewable Energy Systems – Protects terminations in solar, wind, and energy storage installations from moisture and UV exposure.
• Outdoor Lighting & Control Systems – Ensures reliable insulation and sealing for parking lot lighting, streetlights, and security systems.
• Mining, Oil & Gas, and Harsh Environments – Withstands abrasion, corrosion, and extreme conditions for long-term performance.