Heat Shrink Tubing · 3/4 in ID x 4 ft · Adhesive-Lined Heavy Wall 3:1 · Techspan HAPO-750-0-IIL

What this product is for

This adhesive-lined heavy-wall heat shrink tubing is used to insulate, seal, and mechanically protect cable joints, splices, and terminations. It is suited to electrical work where moisture resistance, abrasion protection, and a thicker recovered wall are important.

Use for

Use for underground or direct burial splices, outdoor cable repairs, marine and vehicle wiring protection, and sealing connections exposed to moisture or dirt. The 3:1 shrink ratio helps cover irregular shapes and larger connectors before recovery.

Avoid for

Avoid for applications that need a thin-wall sleeve, high-flex cable marking, or a finished recovered size larger than 0.24 in (6.1 mm). Do not use where the installed temperature exceeds the published material rating.

Best for

Best for electricians and contractors who need a black adhesive-lined sleeve for heavier-duty sealing and strain protection on low-voltage and power cable work. It is a practical choice when standard thin-wall heat shrink does not provide enough wall thickness after recovery.

Installed in

Installed in junction boxes, pull boxes, outdoor equipment, direct burial splice locations, trailers, marine compartments, and service or maintenance repairs where environmental sealing matters.

Why this product exists

This product combines polyolefin heat shrink with an internal adhesive layer so the tubing not only shrinks around the cable but also helps seal against moisture ingress. Heavy-wall construction adds mechanical protection compared with lighter adhesive-lined tubing.

Compared with similar products

Compared with thin-wall heat shrink, this HAPO series tubing provides a thicker recovered wall and better sealing for rougher environments. Compared with flexible adhesive-lined tubing, heavy-wall tubing is commonly chosen for direct burial and tougher outdoor service conditions, while thin-wall options are typically easier to recover on lighter-duty work.

Specifications

• Manufacturer part number: HAPO-750-0-IIL
• Brand: Techspan
• Series: HAPO
• Product type: Heat shrink tubing
• Construction: Heavy wall, adhesive-lined polyolefin
• Colour: Black
• Expanded inner diameter: 3/4 in (19.1 mm)
• Recovered inner diameter: 0.24 in (6.1 mm)
• Recovered wall thickness: 0.120 in (3.0 mm)
• Shrink ratio: 3:1
• Length: 4 ft (1.2 m)
• Voltage rating: 600 VAC
• Operating temperature: -55 to 110 deg C (-67 to 230 deg F)
• Minimum shrink temperature: 120 deg C (248 deg F)

Typical guidance only: adhesive-lined heavy-wall tubing is commonly selected when the splice or termination needs both insulation and a moisture barrier. Actual performance depends on cable size, connector profile, heating method, and installation conditions.