HellermannTyton HIS-PACK-4,8/2,4-BU zmršťovacia bužírka modrá 4,8 mm 2:1 1,2 m

Exposed wire splices and cable ends are vulnerable to moisture, abrasion and short circuits. This blue heat shrink tubing from HellermannTyton seals and insulates electrical connections, restoring a durable protective jacket over splices, terminals and cable bundles. It is made of cross-linked polyolefin that shrinks to half its supplied diameter when heated, conforming tightly to the underlying shape.

Who is it for

Electricians, panel builders, automotive technicians and maintenance crews who need reliable insulation and strain relief on low-voltage wiring. It suits both production line and field repair work where a consistent, professional finish is required.

Main features

• 2:1 shrink ratio: recovers from 4.8 mm to 2.4 mm inside diameter
• Cross-linked polyolefin body resists common solvents and chemicals
• Self-extinguishing per UL224 VW-1, reducing flame spread risk
• Wide operating range from -55 °C to +125 °C
• Dielectric strength above 20 kV/mm for electrical isolation
• Supplied as a single 1.2 m length, cut to size as needed

Specifications

• Colour: Blue
• Expanded diameter: 4.8 mm
• Recovered diameter: 2.4 mm
• Recovered wall thickness: 0.55 mm
• Length: 1.2 m
• Shrink ratio: 2:1
• Material: Cross-linked polyolefin
• Minimum shrink temperature: +90 °C
• Operating temperature: -55 °C to +125 °C
• Tensile strength: > 10.4 MPa
• Volume resistivity: > 10^14 Ohm-cm
• Flame retardancy: Self-extinguishing (UL224 VW-1)
• Halogen-free: No
• Standards compliance: RoHS, UL224 VW-1, CSA

Tips

Use a heat gun set to at least 90 °C and move it evenly around the tubing until it fully recovers. Avoid overheating to prevent discolouration or splitting. For best results, the tubing should be slightly larger than the wire or connector before shrinking.