4:1 Adhesive Lined Heat Shrink Tubing

Professional-Grade Polyolefin Tube


What's special about this 4:1 Heat Shrink Tubing?

  • Shrinks down to 25% of its original diameter; also shrinks 14% or less in its axial direction (lengthwise).
  • Dual Wall tubing creates a watertight seal to protect wire, cable and connector components.
  • Sold by the foot, so you don't have to purchase more than you need.
  • Available in Black
  • Click for More Features
  • RoHS CompliantCSA ApprovedPasses UL VW-1 Flame Test

4:1 Adhesive Lined Heat Shrink Tube
Color Part # Description Price
W4A0.19-4FT 4:1 Adhesive Lined Heat Shrink Tube, 3/16", 4Ft
W4A0.31-4FT 4:1 Adhesive Lined Heat Shrink Tube, 5/16", 4ft
W4A0.50-4FT 4:1 Adhesive Lined Heat Shrink Tube, 1/2", 4Ft
W4A0.75-4FT 4:1 Adhesive Lined Heat Shrink Tube, 3/4", 4Ft
W4A1.00-4FT 4:1 Adhesive Lined Heat Shrink Tube, 1", 4Ft
W4A1.25-4FT 4:1 Adhesive Lined Heat Shrink Tube, 1 1/4", 4Ft
W4A2.00-4FT 4:1 Adhesive Lined Heat Shrink Tube, 2", 4Ft

4 foot sections are the maximum continuous length on Dual Wall and Specialty Tubing
Click here for 4:1 Adhesive Lined Tubing (Dual Wall) specifications

Our 4:1 over-expanded polyolefin heat shrink tubing is flexible, flame-retardant and used for specialty applications that include cable jacket retrofitting and repair, as well as the electrical insulation of wire assemblies with oversized components or connectors. The over-expanded product fits easily over the end of a connector, and shrinks down to 25% of its original diameter to fit snugly over both the connector and any narrower attached wires. Available in Black, and sold by the foot.

Adhesive-Lined Heat Shrink
The adhesive version of our 4:1 heat shrink features “dual-wall” design, which is made up of an outer polyolefin (heat shrink) tube lined with an interior coating of heat-activated adhesive. During application, as the outer tubing shrinks, the inner layer melts, flows, and then resets when cooled, helping the tubing to achieve a snug, moisture-resistant fit around wire harnesses, cables and connectors. We recommend it for applications that require strain relief and watertight seals.

  • Due to the nature of heat shrink, it shrinks lengthwise as well as in diameter. 4:1 heat shrink will shrink 14% or less in the axial direction during the shrink process.
  • 4:1 Heat Shrink is RoHS Compliant, view the certificate here (PDF)
  • View Military Specifications and Manufacturers' Cross Reference

  • Specifications Sheet PDF
    Tensile Strength (psi) ASTM D 638 1500 min.
    Elongation (%) ASTM D 638 200 min.
    Specific Gravity ASTM D 792 1.35 max.
    Low Temperature Flexibility -55°C MIL-DTL-23053 no cracking
    Heat Shock 4 hours at 250°C MIL-DTL-23053 no cracking
    Heat Resistance (175°C, 168 hrs.)
    Elongation (%)
    ASTM D638 100 min.
    Secant Modulus (psi) ASTM D 882 2.5 x 10,000 max.
    Longitudinal Change (%) MIL-DTL-23053 ±5
    Dielectric Strength ASTM D 876 500 min.
    Volume Resistivity ASTM D 876 1.0 x 10,000 min.
    Corrosion (175°C, 16hrs) MIL-DTL-23053 no corrosion
    Water Absorption (%) ASTM D 570 0.5 max.
    Fluid Resistance (23°C, 24 hrs.)
    Tensile Strength (psi)
    MIL-I-23053 1000 min.
    Flammability UL 224 VW-1


    Shrink Temperature, Nominal -- 90°C


    Application (Typical) General Purpose Over Expanded
    Recovery Temperature 90°C
    Flame Retardant YES
    Continuous Operating Temperature -55 to 135°C
    Flexibility Excellent
    Abrasion Resistance Good
    Solvent Resistance Good
    Standard Colors Black
    UL Rating & File No. (Subject 224) 125°C, 600V
    VW-1 (Jacket only for dual wall)
    UL Catalog No. 826 Suffix 3X

    Specification Reference:
    MIL-I-23053/5 Class 1 and Class 3. MIL-R-46846, Type V
    UL 224 125°C, 600 V, VW-1 File E48762 YDPU2


    LG heat shrinkable and non-shrinkable tubing products do not contain the compound Di (2-ethylhexyl) phthalate commonly referred to as DEHP.

    In addition, LG heat shrinkable and non-shrinkable tubing products do not contain PFOS (perfluoroctane sulfonate), PFOA (perfluorocanoic acid) or Tinuvin 320.


    4:1 Adhesive Heat Shrink Tubing
    Minimum Shrink Temperature: 90°C
    Product Dimensions

    3/16" 0.1575" 4mm 0.039" 1.0mm 0.0354" 0.90mm 0.0197" 0.50mm
    5/16" 0.3150" 8mm 0.079" 2.0mm 0.0354" 0.90mm 0.0197" 0.50mm
    1/2" 0.4724" 12mm 0.118" 3.0mm 0.0512" 1.30mm 0.0236" 0.60mm
    3/4" 0.6300" 16mm 0.157" 4.0mm 0.0630" 1.60mm 0.0300" 0.76mm
    1" 0.9449" 24mm 0.236" 6.0mm 0.0827" 2.10mm 0.0311" 0.79mm
    1-1/4" 1.2598" 32mm 0.315" 8.0mm 0.0906" 2.30mm 0.0409" 0.90mm
    2" 2.0472" 52mm 0.5118" 13.0mm 0.0984" 2.50mm 0.0409" 0.90mm
    3" 2.9921" 76mm 0.7480" 19.0mm 0.0984" 2.50mm - -
    4" 4.0157" 102mm 1.3385" 34.0mm 0.1062" 2.70mm - -

    *Metric sizes available for special orders.

    View Measurement Conversion Chart

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    How-To Corner



    Limiting Oxygen Index (LOI)

    The ratio of how much oxygen - as compared to other gases - needs to be present in the air surrounding a particular material in order for that material to burn. The fact that Earth's normal atmospheric air contains around 21% oxygen is used a reference point when materials are classified into burn categories that are based on Limiting Oxygen Index. Substances that are combustible in air containing less than 21% oxygen are considered flammable, while those that burn in the range of anything greater than 21% but less than 28% are typically labeled "slow burning". Any material with an LOI that exceeds 28% is classified as self-extinguishing.

    In the table below, you'll find a list of polymers commonly found in our heat shrink tubing and braided sleeving products, along with their LOIs and the burn categories each falls into.

    ECTFE (Ethylene chlorotrifluoroethylene) Halar 64% Self Extinguishing
    Nomex N/A 28% Slow Burning
    Nylon 6:6 N/A Ranges fron 24-29% Slow Burning to Self Extinguishing
    PET (Polyethylene Terephthalate) Mylar (film), Dacron (fiber) Ranges from 21-34% Slow Burning to Self Extinguishing
    Polyethylene (PE) N/A 17% Flammable
    Polypropylene (PP) polythene (in the UK) 17% Flammable
    Polytetrafluoroethylene (PTFE) Teflon 95% Self Extinguishing
    Polyvinyl Chloride (PVC) N/A Ranges from 45-49% Self Extinguishing

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