Shrinkflex 2:1 Kynar® Heat Shrink Tubing

High-Temperature Protection for Connectors and Splices

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What's special about this heat shrinkable tubing?

  • High-grade polyvinylidene fluoride (PVDF) material provides cables, splices, and connectors with excellent protection from abrasion, cut-through, fluids, and high temperatures
  • ULShrinks and matches the contours of uneven connectors to provide an encapsulating effect that helps keep out moisture while preventing the device from cutting-through the material
  • Meets MIL-DTL-23053/8 specification to ensure material is safe and reliable for use in military applications requiring heat shrink tubing protection
  • Click for More Features

When it comes to protecting exposed wires and connectors from outside elements, there are many suitable options available, such as electrical tape and polyolefin heat shrink. These products are great for applications requiring minor protection or a cosmetic touch-up, but will ultimately fail under extreme conditions. Kynar® 2 to 1 Heat Shrink Tubing is a semi-rigid material with excellent abrasion, chemical, flammability, cut through, and high temperature resistance properties, which makes it ideal for some of the worst environmental, military, or industrial applications.


Please Note: These products ship in 2 weeks

PART# OD Length Spool Size Unshrunk Diameter Shrunk Diameter Available Colors PRICE
in. mm in. mm
HS2-KYS-005 3/64" 4 FT 25 Pieces 0.05" 1.2mm 0.02" 0.6mm Black, Clear
HS2-KYS-006 1/16" 4 FT 25 Pieces 0.06" 1.6mm 0.03" 0.8mm Black, Clear
HS2-KYS-009 3/32" 4 FT 25 Pieces 0.09" 2.4mm 0.04" 1.2mm Black, Clear
HS2-KYS-013 1/8" 4 FT 25 Pieces 0.13" 3.2mm 0.06" 1.6mm Black, Clear
HS2-KYS-019 3/16" 4 FT 25 Pieces 0.19" 4.8mm 0.09" 2.4mm Black, Clear
HS2-KYS-025 1/4" 4 FT 25 Pieces 0.25" 6.4mm 0.13" 3.2mm Black, Clear
HS2-KYS-038 3/8" 4 FT 25 Pieces 0.38" 9.5mm 0.19" 4.7mm Black, Clear
HS2-KYS-050 1/2" 4 FT 25 Pieces 0.50" 12.7mm 0.25" 6.4mm Black, Clear
HS2-KYS-075 3/4" 4 FT 25 Pieces 0.75" 19.1mm 0.38" 9.5mm Black, Clear
HS2-KYS-100 1" 4 FT 25 Pieces 1.00" 24.4mm 0.50" 12.7mm Black, Clear
  • Semi-rigid construction provides strain protection for soldered wires and splices
  • Highly flame-retardant Kynar® material withstands high temperatures while providing resistance to solvents, fluids, and chemicals - perfect for use in grueling mechanical applications
  • Available in either clear or black colors to accommodate a wide range of job applications, whether it be to hide spliced wiring, or to allow connectors to remain visible for future inspection
  • 2:1 shrink ratio allows for easy installation over uneven surfaces
  • Cuts cleanly and easily with just scissors, saving on labor and installation
  • High shrink temperature of 175°C ensures that tubing will not prematurely shrink during installation in hot environments
  • Continuous operating temperature of -67°F to 347°F for extreme environmental conditions
  • UL 224 VW-1 flammability rating


Moisture Absorption % ASTM D-570 0.5
Flammability Rating UL 224 VW-1
Chemical Resistance
Fluid Resistance (23°C/73°F, 24 hrs.) 5,000
Operating Temperatures
Maximum Continuous MIL-DTL-23053 347°F (175°C)
Minimum Continuous MIL-DTL-23053 -67°F (-55°C)
Shrinks 347°F (175°C)
Physical Properties
Recommended Cutting Scissors
Colors Black, Clear
Tensile Strength PSI ASTM D-638 5,000
Elongation % ASTM D-638 150
Specific Gravity ASTM D-792 1.8
Deformation % (302°F/150°C, 1 Hr.) 50
UL 224
Low Temp. Flex (-67°F/-55°C) No Cracking
Heat Shock (572°F/ 300°C, 4 Hrs.) No Cracking
Secant Modulus PSI 100,000
ASTM D-882
Longitudinal Change % ±10
Dielectric Strength (volts/mil) 800
ASTM D-876
Volume Resistivity (ohm-cm) 1.0 x 10 ¹ ³







PTFE heat shrinkPolytetrafluoroethylene (PTFE) Heat Shrink Tubing
PTFE is widely used in military applications because of its high continuous use temperature and outstanding chemical resistance.
FEP heat shrinkFluorinated Ethylene-Propylene (FEP) Heat Shrink Tubing
EP is used in cases where temperatures are not as extreme, and very high shrink ratios are not necessary.
PVDF, Kynar heat shrinkPolyvinylidene Fluoride (PVDF, Kynar) Heat Shrink Tubing
PVDF is used in applications where continuous operating temperatures are 150-175°C. It is used where outstanding abrasion and cut-through resistance are required.
Milwaukee Variable Temperature Heat GunMilwaukee Variable Temperature Heat Gun with LED Digital Readout Display
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