21/02/2026

Flexible Metallic Conduits with Jacketed Cover
Art.-No. 166-90653 | FSU20B-25M-GS/PVC-BK

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  • Highly durable spiral metallic conduit provides extra flexibility and delivers a high degree of compression strength and impact resistance.
  • Smooth PVC cover resists oil and grease and will not crack under repeated bending.
  • Provides ingress protection performance to IP65 when used with FSU-styled fittings.
  • Tight bend radius for use in installations that require constant movement or vibration.
Brand Family HelaGuard®
Color Black (BK)
Description An extra-flexible, galvanized steel conduit with a smooth, oil-resistant PVC coating. FSU series is a spiral constructed, non-UL rated liquid tight conduit used in applications that demand higher levels of movement, vibration and bending. Designed for use where an extra-flexible metallic conduit is needed as well as protection for wires against impact and exposure to oils and chemicals. Use with HelaGuard FSU Metallic Fittings for IP65 ratings.
PART DESCRIPTION FSU20B-25M-GS/PVC-BK
Packaging Type pack
Part No. FSU20B-25M
Short Desc. HelaGuard® Spiral Metallic Conduit, Extra Flexible, 0.50" (20mm) Dia, GS/PVC, Black, 82ft/Reel
Technical Description Manufacturer Reference Number: FSU20B-25M
Type FSU20B-25M
UV Resistant No
Diameter (imperial) 0.67"
Diameter (metric) 16.9mm
Inside Bend Radius (imperial) 1.77"
Inside Bend Radius (metric) 45mm
Nominal Diameter (imperial) 0.5"
Nominal Diameter (metric) 20.0mm
Outside Diameter (imperial) 0.85"
Outside Diameter (metric) 21.5mm
Reel Length (imperial) 82.0ft
Trade Size 1/2 "
CE Certification No
CSA Certified No
Flammability EN IEC 61386-1
Halogen Free No
Material GS, PVC
Material Galvanised Steel (GS), Polyvinylchloride (PVC)
Operating Temperature +5°F to +158°F (-15°C to +70°C)
Prop65 Warning No
REACH Conformity Yes
ROHS compliant Yes
UL Listed (US and Canada) No
UL Listed (US) No
UL Recognized (US and Canada) No
UL Recognized (US) No
Customs Number (Schedule B) 8307100000
Harmonized Tariff Schedule Code 8307.10.6000
Packaging 1 - Weight (kg) 10.18kg
Pkg. Qty. 25.0m
Pkg. Qty. 82.0ft
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