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Heyco Flex™ III 94V-0 Liquid Tight Tubing

Flexible, Nonmetallic Liquid Tight Electrical Tubing

  • Part Numbers and Specifications
  • Features
Black A
Outside Diameter
Inside Diameter
in. mm. in. mm. ft/coil
3/8 8478 HF3 3/8 FR .71 18,0 .51 13,1 100
1/2 8479 HF3 1/2 FR .85 21,6 .65 16,5
3/4 8480 HF3 3/4 FR 1.12 28,3 .87 22,0
1 8481 HF3 1 FR 1.35 34,3 1.10 28,0

*Consult Heyco for cut to length and slit tubing availability.

  • Corrugated tubing for trade sizes 3/8˝ through 1˝.
  • Flame retardant, won't burn.
  • Nontoxic and UV resistant.
  • Rated for NEMA 4 and 4X applications when used with Heyco-Flex III Liquid Tight Fittings.
  • Rated for NEMA Type 3R applications.
  • Maximum flexibility, can be used in extremely tight quarters. Bend radius of Heyco-Flex III is equal to its outside diameter.
  • No threading of the tubing required to install. This eliminates the possibility of cutting the tubing and creating leak paths.
  • Easy, permanent assembly between the tubing and fittings: push the tubing over the fitting ferrule until the tubing clicks into place.
  • Lightweight and lower installed cost.
  • Quick and easy installation.
  • For use with Heyco-Flex III Fittings. Straight, Sweep.
  • Resists corrosion, oil, and water.
  • For use in both wet and dry applications.
  • Suitable for use in high vibration or flexing applications (automotive equipment, fiber optics, computer and peripherals, lab equipment, robotics, etc.).
  • Voltage Rating: 300V.
  • Mounting brackets are available.
  • Order Part No. 8340, HF-28 Cutting Tool, for cutting Heyco-Flex conduit and tubing cleanly and evenly.
  • For additional nylon conduit sizes, see HPAS.


Material   Halogen Free Nylon 6
Certifications Certified to both Canadian and U.S. Requirements under File E121095
Flammability Rating   94V-0
Temperature Range   -.4°F (-18°C) to 221°F (105°C)
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