Very Flexible Dual Wall Heat Shrink Tubing

CYG-DWT

Very Flexible Dual Wall Heat Shrink Tubing

Adhesive Lined Heat Shrink Tube for Automotive
  • Outer jacket: Cross-linked modified polyolefin
  • Inner wall: Modified hot-melt adhesive
  • Shrink ratios: 2:1, 3:1, 4:1
  • Very flexible with excellent elasticity, providing multiple shrink ratio options
  • Good flame retardancy, meeting UL224 VW-1 high flame retardant rating
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Applications
  • Our very flexible dual wall heat shrink tubing offers ideal sealing performance and insulation protection for a wide range of electronic components, including cable connections, terminals, and more.
  • The tubing is available in various shrink ratios to meet the insulation protection requirements of different shapes and sizes.
Features
  • Shrink ratios: 2:1, 3:1, 4:1
  • Very flexible with excellent elasticity, providing multiple shrink ratio options
  • Good flame retardancy, meeting UL224 VW-1 high flame retardant rating
  • Ideal sealing performance
  • Inner adhesive layer ensures adhesion to various materials such as plastic, rubber, and metal
  • Meets AMS-DTL23053/4 Class 1 and 3 requirements
  • Standard color: Black (customizable colors available upon request)
  • Compliant with RoHS environmental standards
Technical Data
Properties Test Method Performance Baseline
Temperature rating - 135°C 135°C
Longitudinal change ASTMD2671 -10%~0 -4%
Tensile strength ASTMD638 ≥10.4Mpa 15.0Mpa
Ultimate elongation ASTMD638 ≥200% 390%
Heat aging test - - -
Tensile strength after aging ASTMD638 ≥7.3Mpa 12.3Mpa
Ultimate elongation after aging ASTMD638 ≥100% 260%
Voltage withstand UL224 600V 600V
Volume resistivity ASTMD2671 ≥1.0×1012 Ω·cm 4.3×1012 Ω·cm
Dielectric strength (2500V/60s) UL224 No breakdown No breakdown
Heat shock (250°C/4h, outer layer only) UL224 No dripping, no flowing, no cracking Pass
Concentricity ASTMD2671 ≥65% 80%
Dimensions

Shrink Ratio: 2:1

Size As Supplied (mm) After Recovery (mm)
Inside Diameter Wall Thickness Inside Diameter Wall Thickness Adhesive Lining Thickness
Ø1.6 1.6+0.3 0.30±0.05 ≤0.8 0.55±0.10 0.25
Ø2.4 2.4+0.4 0.30±0.05 ≤1.2 0.55±0.10 0.25
Ø3.2 3.2+0.4 0.30±0.05 ≤1.6 0.60±0.10 0.30
Ø4.8 4.8+0.5 0.35±0.05 ≤2.4 0.70±0.10 0.35
Ø6.4 6.4+0.5 0.40±0.08 ≤3.2 0.75±0.15 0.40
Ø9.5 9.5+0.5 0.40±0.08 ≤4.8 0.80±0.15 0.40
Ø12.7 12.7+0.3 0.45±0.08 ≤6.4 0.85±0.15 0.40
Ø19.1 19.1+0.4 0.50±0.10 ≤9.5 0.95±0.20 0.45
Ø25.4 25.4+0.5 0.55±0.10 ≤12.7 1.10±0.20 0.50
Ø38.1 38.1+1.0 0.60±0.10 ≤19.0 1.25±0.20 0.50

Shrink Ratio: 3:1

Size As Supplied (mm) After Recovery (mm)
Inside Diameter Wall Thickness Inside Diameter Wall Thickness Adhesive Lining Thickness
Ø3.2 3.2+0.5 0.45±0.05 ≤1.0 1.00±0.20 0.50
Ø4.7 4.7+0.5 0.50±0.05 ≤1.5 1.10±0.25 0.50
Ø6.4 6.4+0.6 0.50±0.08 ≤2.0 1.20±0.25 0.50
Ø9.5 9.5+0.7 0.55±0.08 ≤3.0 1.35±0.25 0.60
Ø12.7 12.7+0.7 0.70±0.10 ≤4.0 1.75±0.30 0.80
Ø19.1 19.1+0.9 0.75±0.10 ≤6.0 2.00±0.40 0.80
Ø24.0 24.0+0.7 0.85±0.12 ≤8.4 2.35±0.30 1.00
Ø25.4 25.4+1.0 0.85±0.12 ≤8.4 2.30±0.45 1.05
Ø30.0 30.0+1.0 0.90±0.15 ≤10.0 2.40±0.45 1.05
Ø40.0 40.0+1.0 0.95±0.15 ≤13.5 2.55±0.45 1.05

Shrink Ratio: 4:1

Size As Supplied (mm) After Recovery (mm)
Inside Diameter Wall Thickness Inside Diameter Wall Thickness Adhesive Lining Thickness
Ø4.0 4.0+0.6 0.50±0.08 ≤1.0 1.20±0.25 0.55
Ø8.0 8.0+0.6 0.55±0.08 ≤2.0 1.55±0.25 0.70
Ø8.0 8.0+0.6 0.40±0.08 ≤2.0 1.10±0.25 0.50
Ø12.0 12.0+0.7 0.75±0.10 ≤3.0 2.05±0.30 0.90
Ø12.0 12.0+0.7 0.50±0.10 ≤3.0 1.40±0.25 0.60
Ø16.0 16.0+0.8 0.70±0.10 ≤4.0 2.10±0.30 1.00
Ø16.0 16.0+0.8 0.60±0.10 ≤4.0 1.80±0.30 0.75
Ø24.0 24.0+1.0 0.85±0.12 ≤6.0 2.60±0.40 1.20
Ø24.0 24.0+1.0 0.75±0.12 ≤6.0 2.25±0.45 0.75
Ø32.0 32.0+1.0 0.90±0.15 ≤8.0 2.90±0.45 1.40
Ø32.0 32.0+1.2 0.80±0.15 ≤8.0 2.55±0.45 1.00
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