ES321ALF - Flexible 3:1 Adhesive Lined Heat Shrink Tubing

Flexible, High-Shrink Ratio, Adhesive Lined, Polyolefin Tubing

Flexible Heat Shrink Tubing Applications

Environmentally seals and protects a wide variety of electrical applications, including wire splices, breakouts, and connector-to-cable transitions.
The ES321ALF 3:1 dual wall heat shrink tubing is more flexible than the ES321AL product.

Flexible 3:1 Adhesive Lined Characteristics

  • 125°C VW-1 600V File No. E323940
  • SAE-AMS-DTL-23053/4
  • RoHS, Sony-SS-00259
  • Operating temperature: -55 °C to +125 °C
  • Minimum shrink temperature: 100 °C
  • Standard Color: Black

Flexible 3:1 Adhesive Lined Properties

CharacteristicTest MethodTest Result
Tensile strength ASTM D 2671 10.4MPa(Min.)
Tensile strength after aging (158°C /168hrs.) ASTM D 2671 Remains 70%
Elongation at break ASTM D 2671 300%
Elongation break after aging (158°C/168hrs.) ASTM D 2671 150%
Longitudinal shrinkage UL 224 0 to -10%
Heat shock (225°C/4hrs.) ASTM D 2671 No cracking, no dropping
Cold bend test ( -30°C /4hrs.) ASTM D 2671 No cracking
Voltage Stress (AC 2500V/60 seconds) ASTM D 2671 No Breakdown
Volume resistance ASTM D 876 1014 Ω Cm.
Flammability UL 224 VW 1 SAE AMS DTL 23053/4 Self extinguishes within 30 seconds
Copper corrosion (158°C /168 hrs) UL 224 Pass
Water absorption ASTM D 570 <0.5%
Adhesion to Aluminium (AL) ASTM D 2671 60N/25mm
Fluid Resistance Tensile Strength: 7MPa(min.) Elongation: 300% (min.) 24 hrs. at 23°C in Diesel and lubricating oil

Flexible 3:1 Adhesive Lined Specifications

Minimum Expanded ID as Supplied in Inches (mm)Maximum Recovered ID After Heating (mm)Total Wall ThicknessAdhesive ThicknessStandard Spool Length (feet)
1/8 (3.18) .039 (1.0) .039 (1.00) .020 (0.5) 500
3/16 (4.75) .059 (1.5) .039 (1.00) .020 (0.5) 250
1/4 (6.35) .079 (2.0) .039 (1.00) .020 (0.5) 250
3/8 ( 9.53) .118 (3.0) .055 (1.4) .024 (0.6) 200
1/2 (12.70) .157 (4.0) .063 (1.6) .032 (0.8) 100
3/4 (19.05) .236 (6.0) .085 (2.15) .032 (0.8) 100
1 (25.40) .315 (8.0) .094 (2.4) .039 (1.0) 100
1 1/2 (38.10) .512 (13.0) .094 (2.4) .039 (1.0) 100

Technical specifications subject to change without notice.

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