Heat Shrinkable Sleeve

Heat Shrinkable Sleeves are designed to provide reliable electrical insulation, mechanical protection, and environmental sealing for cables and wire joints. Manufactured from cross-linked modified polyolefin, these sleeves offer excellent durability and long-term performance in demanding conditions.

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Heat Shrinkable Sleeve

The material is soft and flexible, allowing easy installation and uniform shrinking when heated. Once shrunk, it forms a tight, secure layer that protects cables from heat, abrasion, and electrical stress.

These sleeves are halogen-free with low smoke emission, making them safe and environmentally friendly. They comply with RoHS and REACH standards and meet UL224 VW-1 flammability requirements, ensuring enhanced safety in critical installations.

With excellent heat resistance, insulation strength, and voltage performance, heat shrinkable sleeves ensure stable and efficient cable operation across a wide temperature range.

Product Details

Product Name

Heat Shrinkable Sleeve

Shrink Ratio

2:1

Operating Temperature

–55 °C to +125 °C

Material

Cross-linked Modified Polyolefin

Minimum Shrink Temperature

70 °C

Minimum Full Recovery Temperature

120 °C

Color Options

Multi Color

Typical Applications

Cable insulation, electronics, buildings, subways, public facilities

Flammability Rating

UL224 VW-1

Technical Data – Heat Shrinkable Sleeve for Cable Insulation

Item	Technical Parameters	Test Method / Standard
Base Material	Cross-linked modified polyolefin	Halogen-free
Shrink Ratio	2 : 1	Standard shrink ratio
Operating Temperature	−55°C to +125°C	Continuous use
Minimum Shrink Temperature	≥ 70°C	Shrink initiation
Minimum Full Recovery Temperature	≥ 120°C	Complete shrink
Flammability	VW-1	UL 224
Temperature Rating	125°C	UL 224
Length Change After Shrink	−5% to +5%	ASTM D2671
Tensile Strength	≥ 10.4 MPa	ASTM D638
Elongation at Break	≥ 200%	ASTM D638
Thermal Aging Tensile Strength	≥ 7.3 MPa	ASTM D638
Heat Aging Elongation	≥ 100%	ASTM D638
Hot Air Aging Test	158°C × 168 hours	Thermal aging
Voltage Rating	300 V / 600 V	UL 224
Breakdown Voltage	2500 V (60 seconds, no breakdown)	UL 224
Volume Resistivity	≥ 1.0 × 10¹² Ω·cm	ASTM D2671
Thermal Shock Resistance	Does not drip, flow, or crack	UL 224 / 250°C ±3°C / 4h
Heat Shrink Recovery	≥ 70%	ASTM D2671
Environmental Compliance	RoHS, REACH compliant	Halogen-free, low smoke
Typical Applications	Cable insulation, wire harness protection, electronics, buildings, public facilities, transportation and industrial installations	General-purpose insulation