HellermannTyton HelaShrink 323-20950 Heat Shrink Tubing, Black, 4 Pieces, 3:1 Ratio, 20 mm ID

The HellermannTyton HelaShrink 323-20950 heat shrink tubing provides reliable insulation and protection for electrical connections. Made from cross-linked polyolefin, this black tubing offers a 3:1 shrink ratio, making it ideal for a wide range of applications. Each pack contains 4 pieces, each 1.2 meters long, with a supplied inner diameter of 20 mm and a recovered diameter of 6 mm. It is flame retardant, halogen-free, UV resistant, and RoHS compliant, ensuring safety and durability in demanding environments.

Advantages

High shrink ratio (3:1) allows for versatile use on various cable sizes. Excellent dielectric strength (20 kV/mm) and tensile strength (15 MPa) provide robust insulation and mechanical protection. Operating temperature range from -55 °C to +135 °C ensures performance in extreme conditions. Flame retardant rating UL224 VW-1 enhances safety.

Suitable for

• Insulating and protecting electrical cables and wires
• Bundling and strain relief in automotive, industrial, and electronic applications
• Sealing and environmental protection for connectors and terminals

Key specifications

• Product Type: Heat Shrink Tubing
• Series: HelaShrink 323
• Material: Cross-linked Polyolefin
• Color: Black
• Shrink Ratio: 3:1
• Inner Diameter (Supplied): 20.0 mm
• Inner Diameter (Recovered): 6.0 mm
• Wall Thickness (Recovered): 1.80 mm
• Length per Piece: 1.2 m
• Quantity per Pack: 4 Pieces
• Operating Temperature Range: -55 °C to +135 °C
• Minimum Shrink Temperature: +90 °C
• Dielectric Strength: 20 kV/mm
• Tensile Strength: 15 MPa
• Flame Retardant: Yes (UL224 VW-1)
• Halogen-Free: Yes
• UV Resistant: Yes
• RoHS Compliant: Yes

Recommendations

For best results, use a heat gun or hot air blower to shrink the tubing evenly. Ensure the cable diameter is within the shrink range (6-20 mm). Store in a cool, dry place away from direct sunlight.