A Comprehensive Guide to Flexible Conduit Fitting Parts for Electrical Protection
A Comprehensive Guide to Flexible Conduit Fitting Parts for Electrical Protection
April 25, 2025
The Basics: Flexible Conduit and Liquid-Tight Seals
Flexible conduit is a versatile tubing solution designed to route and shield wires and cables. Crafted from materials like metal or plastic, it offers bendability without compromising structural integrity, making it ideal for complex wiring layouts.
A liquid-tight seal is a specialized fitting that creates a watertight connection between the conduit and electrical enclosures or boxes. Beyond preventing water intrusion, it acts as a barrier against dust, debris, and corrosive elements, making it indispensable in harsh environments such as industrial settings, outdoor installations, or areas with high humidity. When installed correctly, these seals provide years of trouble-free performance, minimizing maintenance costs and downtime.
Types of Conduit Fittings: Versatility for Every Application
Conduit fittings are the unsung heroes of electrical setups, available in a range of materials, trade sizes, and configurations:
Straight fittings: Enable direct connection to the side of an enclosure, ideal for linear wiring paths.
45-degree fittings: Allow gentle bends in wiring, facilitating connections where slight angles are needed.
90-degree fittings: Create sharp, corner bends, aligning conduit with enclosure sides in tight spaces.
Less common but equally vital are specialized fittings like ground lugs (for grounding purposes), strain relief devices (to reduce wire stress), cord grips (for secure cable termination), and ATEX-rated fittings (certified for use in explosive environments). Each serves a unique purpose in ensuring compliance, safety, and ease of installation.
Key Considerations When Choosing Conduit Fittings
Selecting the right fitting requires a strategic approach:
Application and Conduit Type: Match the fitting to the conduit material (metal/plastic) and the specific use case (indoor/outdoor, industrial/commercial).
Environmental Factors: Account for temperature extremes, humidity, and corrosion risks. For example, stainless steel fittings are optimal for corrosive environments, while PVC fittings suit low-risk indoor setups.
Code Compliance: The National Electrical Code (NEC) sets standards for safe fittings, emphasizing updates to reflect new technologies and safety protocols. Always ensure fittings are UL or CSA listed for compliance.
Fitting Features
Our premium fittings are engineered for durability and performance:
Clamping/Gland Nut: Secures the conduit jacket by compressing the sealing ring.
Sealing Ring: A flexible polymer ring that grips the conduit tightly when the nut is tightened.
Ferrule: Threaded components that interlock with the conduit’s internal structure for a firm hold.
Body Geometry: Designed to cradle the sealing ring, enhancing conduit constraint.
Lock Nut: Tiger claw design prevents loosening, even in high-vibration environments.
Insulated Throat: Protects wires from abrasion against sharp edges.