8mm Black Polyolefin Heat Shrink Tube 1-Meter Insulating Sleeve

Product Description The 8mm Polyolefin Heat Shrink Tube is a high-quality insulation and protection solution essential for professional electronics and electrical wiring. Designed to provide a tight, protective seal over wire joints, terminals, and connectors, this 1-meter sleeve is made from flame-retardant polyolefin. When heat is applied, the tube shrinks to half its original diameter, conforming perfectly to the shape of the underlying component to provide mechanical strength and environmental shielding.

This 8mm variant is specifically sized for medium-gauge wires, bundled cables, and larger connector solder points. It offers excellent electrical insulation properties, effectively preventing short circuits and protecting delicate connections from abrasion, moisture, and chemical exposure. The black color is UV-resistant and provides a clean, professional finish to any wiring harness or DIY robotics project, ensuring that your cable management looks as good as it functions.

The polyolefin material used in this tubing is known for its flexibility and durability. Unlike cheaper PVC-based alternatives, polyolefin heat shrink does not become brittle over time and maintains its integrity even when subjected to repeated bending or moderate temperature fluctuations. This makes it a dependable choice for automotive wiring, industrial control panels, and consumer electronics repair where long-term reliability is non-negotiable.

Applying the heat shrink is a simple process that can be performed with a heat gun, a specialized soldering iron attachment, or even a standard lighter in emergency prototyping scenarios. The 2:1 shrink ratio ensures a versatile fit, allowing the tube to easily slide over connectors and then shrink down to secure the wire tightly. This "shrink-to-fit" capability provides a far superior seal compared to traditional electrical tape, which can unravel or leave sticky residue over time.

Whether you are insulating the solder joints of a high-power DC motor or organizing the sensor wires on a drone, this 8mm heat shrink tube offers the professional-grade protection required for high-performance engineering. At Robogears, we supply this tubing in continuous 1-meter lengths to give you the flexibility to cut exactly what you need for your specific application, reducing waste and improving the efficiency of your assembly process.

Key Features

• High-quality Polyolefin material for superior flexibility and strength.

• 2:1 Shrink ratio for a secure, conformable fit over wires and connectors.

• Flame-retardant and VW-1 rated for enhanced safety in electrical circuits.

• Excellent dielectric strength rated up to 600V for reliable insulation.

• Resistant to common chemicals, oils, and environmental moisture.

• Smooth black finish for professional-grade cable management and aesthetics.

Technical Details

• Inner Diameter (As Supplied): 8.0 ± 0.3mm.

• Inner Diameter (After Shrink): ≤ 4.0mm.

• Wall Thickness (After Shrink): 0.56 ± 0.10mm.

• Material Composition: Cross-linked Polyolefin.

• Minimum Shrinkage Temperature: +70°C.

• Full Recovery Temperature: +110°C.

• Operating Temperature Range: -55°C to +125°C.

• Tensile Strength: ≥ 10.4 MPa.

• Elongation at Break: ≥ 200%.

• Dielectric Strength: 15 kV/mm.

• Volume Resistivity: ≥ 10¹⁴ Ω-cm.

• Corrosion Resistance: No corrosion after 168 hours at 158°C.

• Cold Bend Performance: No cracking at -55°C for 4 hours.

• Standard Compliance: RoHS and UL recognized.