Metallic Flexible Cable Conduit

Material Type

Description

Key Properties

Common Applications

Galvanized Steel

Steel coated with zinc to prevent rust

High strength, corrosion-resistant, fireproof

Industrial plants, harsh environments

Stainless Steel

Steel alloy with chromium/nickel for enhanced corrosion resistance

Extremely durable, chemical/weather-resistant, hygienic

Food processing, marine, pharmaceutical

Aluminum

Lightweight metal with natural oxidation resistance

Corrosion-resistant, EMI-shielded, easy to bend

HVAC, outdoor lighting, data centers

Bronze/Brass

Copper alloy with tin or zinc

Conductive, corrosion-resistant, decorative

Hazardous locations, marine, historical wiring

Interlocked Metal

Spirally wound steel or aluminum strips (flexible by design)

Flexible yet crush-resistant, good for tight bends

Machinery, robotics, automotive

Property

Galvanized Steel

Aluminum

Stainless Steel

Weight

Heavy

Lightweight

Moderate

Corrosion Resistance

Good (with zinc coating)

Excellent (oxidizes naturally)

Superior (rust-proof)

Cost

Low to moderate

Moderate

High

EMI Shielding

Yes

Yes

Yes

Best For

General industrial use

Outdoor/lightweight needs

Extreme environments

Trade Size (Inches)

Metric Size (mm)

Inner Diameter (ID) Approx.

Outer Diameter (OD) Approx.

Typical Applications

3/8"

10 mm

~0.35" (8.9 mm)

~0.50" (12.7 mm)

Small control wiring, sensors

1/2"

16 mm

~0.62" (15.7 mm)

~0.82" (20.8 mm)

HVAC, lighting, machinery controls

3/4"

21 mm

~0.87" (22.1 mm)

~1.13" (28.7 mm)

Pumps, motors, industrial equipment

1"

27 mm

~1.14" (29.0 mm)

~1.44" (36.6 mm)

Power distribution, generators

1-1/4"

35 mm

~1.43" (36.3 mm)

~1.77" (45.0 mm)

Large motors, commercial wiring

1-1/2"

41 mm

~1.68" (42.7 mm)

~2.05" (52.1 mm)

Heavy-duty industrial, feeders

2"

53 mm

~2.13" (54.1 mm)

~2.52" (64.0 mm)

High-capacity power runs, solar installations

2-1/2"

63 mm

~2.59" (65.8 mm)

~3.03" (77.0 mm)

Large-scale industrial/commercial use

3"

78 mm

~3.13" (79.5 mm)

~3.58" (91.0 mm)

Substations, data centers, heavy machinery

4"

103 mm

~4.13" (104.9 mm)

~4.65" (118.1 mm)

Mining, oil/gas, extreme environments

Industry/Environment

Specific Applications

Why Metallic?

Industrial Machinery

CNC machines, robotic arms, assembly lines

Crush-resistant, protects against oil/coolant splashes

Commercial Construction

Wiring for elevators, escalators, HVAC systems

Meets fire codes (steel), easy to install in tight spaces

Hazardous Locations

Oil refineries, chemical plants (Class I Div 2 areas)

Prevents sparks, corrosion-resistant (stainless steel options)

Outdoor/Weather-Exposed

Stadium lighting, traffic signals, marine docks

Stainless steel/aluminum resists rust, UV, and saltwater

Data Centers & Telecom

Server room cable management, fiber optic runs

EMI shielding (critical for sensitive electronics)

Food & Beverage

Washdown areas, processing equipment

Stainless steel is hygienic and chemical-resistant

Energy & Utilities

Solar farms, wind turbines, substations

Flexible for vibration, weatherproof (LFMC options)

Automotive

Vehicle assembly lines, car wash systems

Withstands high-pressure sprays, resists automotive fluids

Entertainment/Venues

Stage lighting, temporary event wiring

Flexible for reconfiguration, durable in high-traffic areas

Military/Aerospace

Aircraft hangars, mobile command units

Lightweight (aluminum), EMI/RFI shielding