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GB® HST-125 Heat Shrink Tubing, 1/8 in ID Expanded, 1/16 in ID Recovered, 2:1 Shrink, 4 in L, Polyolefin, Black

ECM Industries, LLC


GB® HST-125 Heat Shrink Tubing, 1/8 in ID Expanded, 1/16 in ID Recovered, 2:1 Shrink, 4 in L, Polyolefin, Black

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Thin wall heat shrink tubing is constructed from durable, flame retardant black polyolefin which is resistant to both solvents and fluids making it ideal for cable insulation, repair, marking or bundling. Heat shrink not only provides superior mechanical, abrasion and moisture protection but also strengthens connections and provides a comfortable gripping surface. As a result, professional and DIY multi-purpose uses include repairing cords (ranging from large appliance cords to small electronic cables that show wear at pull-out), covering tool and sporting equipment handles and sealing rope for neat, unravel-resistant ends. Finally, tubing capably resists common fluids and solvents. Upon heating to 120 deg C (250 deg F) the tubing begins to shrink but will not drip, crack or flow and is self-extinguishing within 30 sec. Meets UL 224, 125 deg C: CSA C22.2 No3 198.1, 125 deg C, MIL-DTL-23053/5, Class 1 and 2, AMS 3636 and 3637, DEF STAN 59-79, Issue 3 Type 2a. Continuous operating temperature: -55 to 135 deg C (-67 to 275 deg F). Shrink temperature: 120 to 250 deg C (250 to 480 deg F). 600 V/mil Dielectric strength.


  • Provides excellent protection from mechanical abrasion and moisture
  • Flame retardant polyolefin construction resists common fluids and solvents
  • Repairs, strengthens and protects cable insulation to ensure strong connections
  • Ideal for general purposes uses including adding perspiration-resistant grip to tool and sporting handles or sealing rope ends
  • Excellent product to repair appliance, extension or small electronic cords that are exposing bare wires
  • 2:1 shrink ratio means tubing shrinks to 1/2 it's ID (inner diameter) size
  • Self-extinguishing tubing will not drip, crack or flow when heated to shrink temperatures


Wire Size22 to 18
Shrink Ratio2:1
Temperature Rating-55 to 135
Voltage Rating600
Dielectric Strength600
Wall TypeThin
Shrink Temperature250 to 480
Inside Diameter Recovered1/16
Inside Diameter Expanded1/8
ManufacturerECM Industries, LLC