Cable conduit – smart protection for modern industrial cable systems

Implementing the right cable protection solutions from the start not only helps reduce maintenance costs but also minimizes the risk of operational disruptions and enhances the safety of the entire system.

In industrial electrical and transmission systems, cables must not only ensure stable signal transmission but also be fully protected from environmental influences during operation. Mechanical abrasion, chemicals, extreme temperatures, and continuous vibrations can all degrade cable performance if appropriate protection is not provided.

Cable conduits act as a flexible protective layer, safeguarding cables from mechanical damage while minimizing the impact of oil, solvents, dust, and moisture. At the same time, they help extend the service life of the entire wiring system. Thanks to their flexible bending capability, easy installation, and wide range of available materials, cable conduits have become an essential solution for applications in mechanical engineering, the automotive industry, production lines, the chemical industry, and outdoor installations.

Implementing the right cable protection solution from the beginning not only reduces maintenance costs but also minimizes the risk of operational downtime and improves the overall safety of the system.

Discover the functions and applications of cable conduits

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HELU Product Catalog

Plastic conduits

Plastic conduits

Our product portfolio
Shrinkable tubing

Shrinkable tubing

Our product portfolio
High-temperature protection

High-temperature protection

Our product portfolio
Conduits for high mechanical stress

Conduits for high mechanical stress

Our product portfolio
Conduits for PV systems

Conduits for PV systems

Cable conduit fittings

Cable conduit fittings

Our product portfolio
Accessories for conduits

Accessories for conduits

Our product portfolio

Plastic conduits

HELU’s Type K and S plastic corrugated conduits, as well as the PT-S and S-PU series, are manufactured from polyamide, PVC, and polyurethane. They offer high flexibility and are lightweight, while also protecting cables from moisture, dust, and chemical agents.

In addition, the slotted design allows for retrofitting onto existing cable runs, making installation and maintenance more convenient.

PT-S extremely flexible PVC corrugated conduit
PT-S extremely flexible PVC corrugated conduit
 PropertiesOuter diameter (mm)ColorData Sheet
HELUcond PA6-LHalogen-free, UV-resistant10 - 53.8Grey, black 99610
HELUcond PA6 / HELUcond PA6-ULUL-certified, halogen-free10 - 54.5Grey, black 92,675 / 920,384
HELUcond PA6-SHalogen-free7.1 - 53.8Grey, black 920154
HELUcond PEHalogen-free12.7 - 54.5Grey, black 91621
HELUcond PPHalogen-free, UV-resistant10 - 54.5Black 920170
JUMBO PUR / JUMBO PA6 / JUMBO PA12Halogen-free79.2 - 106Grey, black 920382 / 90408 / 920378
HELUcond PA12Halogen-free13 - 54.5Grey, black 920156
HELUcond W-CO-PA-12-MOD-BS-V2Halogen-free, UV-resistant10 - 102.5Black 11020606
HELUcond CO-PPHalogen-free13.4 - 79.8Black 97496
HELUcond CO-PAHalogen-free, UV-resistant13.5 - 79.8Black 90061
PVC-ICWeather-resistant Blue, yellow, red, orange... 92280
PVC-IB Black 91310
T-SIChemical-resistant, UV-resistant, ozone-resistant Natural 94741
PT-SExtremely flexible, oil- and acid-resistant10 - 56Grey 91219
Airflex-KPVC with a hard plastic helix, flame-retardant14 - 56Grey 11024498

Shrinkable tubing

Black shrinkable tubing for cables features an integrated adhesive inner layer that provides long-term protection against moisture. When heated, the material shrinks and forms a completely sealed barrier.

This proven solution is commonly used to finalize cable repairs or to seal transition points between different cable types, ensuring reliable sealing and long-term durability of the connection.

HSB-Boxes shrinkable tubing
HSB-Boxes shrinkable tubing
 PropertiesWall thickness (mm)Packaging unit (m)ColorData Sheet
SPSPFlame-retardant0.4 - 0.8910 - 20A variety of colors 91777
SPRO - 3:1Polyolefin materials0.65 - 1.1530 - 75A variety of colors 903035
HSB Boxes 0.4 - 0.81Black, transparent 91321
P-SKFlexible1.0 - 2.4 Black 98258
HFSHalogen-free0.4 - 1.130 - 150Black 99551
SK-DHalogen-free1.8 - 4.31.22Black 905344
CMPPolyolefin materials 12.2 - 30.5Black 91290
SCHPVC material compliant with UL 94 standards0.45 - 1.050 - 100Black 91300
SVROFluorocarbon rubber, weather-resistant0.8 - 2.815 - 50Black 96796
SK-MHalogen-free2.0 - 3.01.22Black 99788
SPRO - 2:1Self-extinguishing0.4 - 1.415 - 150A variety of colors 91788

Metal conduits

Thanks to its metal construction, this protective tubing also provides effective shielding against electromagnetic interference (EMI) and is suitable for use in environments with extreme temperatures.

These types of corrugated conduits feature a spiral-wound design and are manufactured from galvanized steel or stainless steel.

They provide very high mechanical stability while still maintaining the flexibility required for installation and operation. Thanks to their metallic construction, these protective conduits also offer effective shielding against electromagnetic interference (EMI) and are suitable for use in environments with extreme temperatures.

Galvanized steel flexible conduit SWS-UI
Galvanized steel flexible conduit SWS-UI
 ProperitiesOuter diameter (mm)Wall thickness (m)ColorData Sheet
SPR-ASVDE, UV-resistant, galvanized steel10 - 5610 - 50  97023
SPR-PVC-ASVDE, galvanized steel10 - 5610 - 50Grey, black 97032
SPR-EDU-ASVDE, UV-resistant10 - 5610 - 50  97584
S-PUVDE-certified, UV-resistant, halogen-free, PUR with integrated spring steel wire10 - 5610 - 50  90464
SWS-UIGalvanized steel, with double-folded profile (Agraff profile)12.5–55.715 - 30  905804
SWM-MVDE, UV-resistant, with double-folded profile (Agraff profile)10 - 5625 - 50  97014
SPR-PU-ASVDE, UV-resistant, halogen-free10 - 5625 - 50Blue 97793

High temperature protection

Our HTP series is specifically designed for applications in extremely high-temperature environments. A silicone layer containing iron oxide, applied over a fiberglass braid, enables this protective conduit to withstand temperatures of up to +260 °C.

The material can even tolerate small amounts of molten metal and effectively protects cables from welding sparks, making it particularly suitable for high-temperature industrial environments where spark exposure is a risk.

HTP-PT high temperature protection accessories
HTP-PT high temperature protection accessories
 TemperatureMaterialsPropertiesData Sheet
HTP-PT-55°C to +260°C
Short-term load of +800°C (up to 20 minutes)
Loading time: 1640°C (15–30 seconds)
Sheath: Silicone (contains iron oxide)
Interior sheath of knitted glass-fibre braid
Halogen-free 93630
HTP-WT 94721
HTP-CR-45°C to +105°CNickel-plated brass  905439
HTP-AT-55°C to +260°CSheath: Silicone (contains iron oxide)
Interior sheath of knitted glass-fibre braid
Halogen-free 93645

Protective conduits for high mechanical stress

In mechanical engineering, these corrugated conduits protect cables from metal shavings and coolant generated during machining processes. In the automotive industry, they must withstand continuous temperature fluctuations and constant vibrations. In the process industry, these cable protection systems are designed to resist aggressive chemicals and oils.

For outdoor installations, solutions with UV resistance and weather protection are required. A robust metal braid also helps prevent damage caused by rodents, thereby reducing the risk of costly machine downtime.

LT-FG-Clean Flexible Hose Connector
LT-FG-Clean Flexible Hose Connector
 StructureFeaturesTemperatureColorData Sheet
Anaconda Sealtite® NMFG-CleanPVC material, integrated hard PVC spiralliquid-tight
prevents harmful microorganisms from adhering
-35°C to +60°CBlue 908211
Anaconda Sealtite® EFPVC sheath, reinforced, galvanised and spiral wound steel bandIP 67-25°C to +70°CGrey, black 91229
Anaconda Sealtite® HTDLUL, CSA, UV-resistant-45°C to +105°CBlack 98149
Anaconda Sealtite® ORUV protection-15°C to +100°CBlack 91245
Anaconda Sealtite® CNPSpecial PVC with woven nylon insertUL, CSA, UV-resistant-20°C to +60°COrange 91259
Anaconda Sealtite® HCXsteel galvanized, reinforced, galvanised and spiral wound steel bandUV-resistant, suitable for a wide range of temperatures-60°C to +150°CBlack 94735
Anaconda Sealtite® HC-45°C to +105°CBlack 91238
Anaconda Sealtite® HFXUV-resistant, low smoke, flexible at low temperatures-55°C to +105°CBlack 94994

Braided sleeves

Plastic braided sleeve is highly flexible and lightweight, and protects cables from moisture, dust, and chemical agents.

HGP Cable Protection Braid
HGP Cable Protection Braid
 TemperatureMaterialsFeaturesData Sheet
HGP-50°C to +150°C
short-term up to +220°C
PolyesterHalogen-free 94900
GFS-CU
-50°C to +250°CCopper tinnedUKCA, EMC 97397
GFS-S
-50°C to +250°CSteel tinnedUKCA 97197

Conduit fittings

HELU conduit fittings ensure a secure connection between cable protection conduits and equipment enclosures or junction boxes. They provide defined protection ratings (IP65, IP66, IP68) while reducing mechanical stress on the cable (strain relief).

These fittings are available in various thread sizes (metric M, PG) and a range of materials, making them suitable for diverse industrial installation requirements.

LT-FG-Clean stainless steel conduit gland
LT-FG-Clean stainless steel conduit gland
 TemperatureMaterialsFeaturesData Sheet
HSSV-SP
-40°C to +110°CPA 6Halogen-free 905858
HELUquick straight
-40°C to +120°CPA 6Halogen-free 904797
MTG-US
-40°C to +125°CNickel-plated brass  98331
LT-CNP
-45°C to +105°CGalvanized steelUL/CSA certified 904907
HSSV IP68 straight-40°C to +110°CPA 6Halogen-free 920404
JUMBO-FP
-40°C to +120°CPA 6Halogen-free 90402
LT elbow 90°-45°C to +105°CNickel-plated brassHalogen-free 94170
HSSV elbow 90° flange-40°C to +110°CPA 6Halogen-free 920209
HSSV IP68 elbow 90°-40°C to +110°CPA 6Halogen-free 920422
CV Compact elbow 90° / CV Compact straight
-45°C to +105°CNickel-plated brassUL/CSA-certified 908481 / 908473
HELUquick elbow 90°-40°C to +120°CPA 6UL/CSA, VDE certified 904805
LT-FG-Clean-45°C to +105°Cstainless steelresistant to: chemical cleaning supplies 906928

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