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AUTOMATIC FREE SHIPPING $49+
AUTOMATIC FREE SHIPPING $49+

Heat Shrink Tubing - 3/8" ID - 2:1 Ratio - Adhesive Lined Dual Wall Polyolefin - Flexible - Flame Retardant - Black

Original price $7.46 - Original price $7.46
Original price
$7.46
$7.46 - $7.46
Current price $7.46
SKU HSDW-21-037-BK-4
MFTR PART# HS504-BK
Length: 4 Feet

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Product Features:

  • Length per Stick: 48”
  • UL Listed: File E536025
  • Shrink Ratio: 50% or more radially, ≤5% axially
  • Operating Temperature: -55°C(-67°F) to 110°C (230°F)
  • Electrical Insulation: Excellent dielectric properties
  • Standards: AMS-DTL-23053/4 Class 2 (formerly MIL-DTL-23053/4 Class 2)
  • RoHS Compliant
  • Environmental Protection: Adhesive lining seals against moisture
  • Usage: Ideal for electrical insulation, strain relief, light-duty harnessing, jacketing, and wire bundling

Technical Specifications Data:

  • Internal Diameter - Minimum D (Expanded) - 0.375" (9.5 mm)
  • Internal Diameter - Maximum D (Recovered) - 0.062" (1.57 mm)
  • Minimum Total Wall Thickness (Total Wall) (T) - 0.022" (0.56 mm)
  • Normal Wall Thickness (Adhesive Wall) (T) - 0.012" (0.30 mm)
  • Tensile Strength (psi) – ASTM D638 (Test Method), ≥1500
  • Elongation (%) – ASTM D638 (Test Method), ≥2000
  • Tensile Strength after Fluid Exposure (psi) – ASTM D638 (Test Method), ≥1000
  • Dielectric Strength (V/mil) – ASTM D2671 (Test Method), ≥400
  • Heat Shock – 250°C, 4 hrs (Test Method), No cracks, flowing, or dripping
  • Low Temperature Flex – ASTM D746 (Test Method), No crack @ -55°C
  • Secant Modulus (psi) – ASTM D882 (Test Method), ≤25,000
  • Heat Resistance – ASTM D2671 (Test Method), No cracks
  • Dielectric Strength (V/mil) – ASTM D2671 (Electrical, Test Method), ≥500
  • Volume Resistivity (Ω·cm) – ASTM D876 (Test Method), ≥1×10¹²
  • Copper Corrosion – 121℃, 16 hrs (Test Method), No corrosion
  • Fungus Resistance – ASTM G21 (Test Method), No growth
  • Water Absorption (%) – ASTM D570 (Test Method), ≤0.5
  • Flammability – ASTM D2671 (Test Method), Pass
  • Electrical Insulation – Rated for 600V

At Heatshrinktubing.com, we are dedicated to providing you with high-quality products and exceptional service. Please review our shipping and return policy below:

Shipping Policy:

  • All orders are processed and shipped within [1] business day.
  • We Partner with [Fedex, UPS & USPS] to ensure your order reaches you safely and promptly.
  • Shipping costs are calculated at checkout based on the Dimensions, weight and destination of your order.

Return Policy:

  • Customers have 30 days from the date of receiving their order to initiate a return.
  • Please note that all cut-to-length orders (including but not limited to 10, 25, 50, 100-foot cuts) are non-returnable and considered final sale.
  • Only uncut, full spool lengths are eligible for return.
  • Returns must be shipped at the customer’s expense.
  • To initiate a return, please contact our customer service team with your order number and reason for return.
  • Returned items must be in their original condition and packaging.
  • Once we receive and inspect the returned item, we will process a refund or exchange, depending on your preference.

Thank you for shopping with Heatshrinktubing.com!