A cable gland is a part that secures the cable and protects it from cable disconnection and load due to vibration, and prevents water, oil, and dust from entering the insertion port. Used for cable outlets of electrical wiring devices such as control panels, junction boxes, handy controllers, etc. After inserting the cable into the connector body, fix and connect it with a rubber bush that serves as an internal seal, a lock nut, and a seal nut. The most common type is a tool that can be hand tightened without using tools, and there are parts for various sizes and applications. The material is made of polyamide, which has excellent waterproof properties, NBR rubber, which is resistant to oil, silicon rubber, which is resistant to aging and ultraviolet rays, metal, which is resistant to chemicals and impact, etc. There are also parts with different shapes from general-purpose types, such as spiral and pinch types that prevent cable breakage, etc.
Key Functions of Cable Glands
Secure cables firmly to prevent pull-out caused by vibration or movement
Provide strain relief and reduce mechanical stress on cable terminations
Prevent ingress of water, oil, dust, and contaminants
Maintain enclosure integrity and IP-rated protection
Support grounding and shielding in electrical installations
Types and Shapes of Cable Glands
Cable glands are available in multiple designs to suit different routing and installation needs:
Integrated Type – Compact design combining sealing and fixing functions
Split Type – Allows installation without disconnecting pre-terminated cables
Standard Cable Gland Type – General-purpose solution for most panels and enclosures
Angle Type – Ideal for tight spaces or directional cable routing
Flexible Corrugate Type – Supports corrugated conduits and flexible tubing
Multi-Hole Type – Enables routing of multiple cables through a single gland
Joint Type – Used for cable-to-cable or conduit connections
Shield Type – Provides EMC shielding and grounding for braided cables
Multiple Type (Square) – Suitable for flat or grouped cable layouts
Material Options
Cable glands are manufactured using materials selected based on environmental and mechanical requirements:
Polyamide (Nylon) – Lightweight, corrosion-resistant, and waterproof
NBR Rubber – Excellent oil and fuel resistance
Silicone Rubber – Superior resistance to aging, UV, and temperature variations
Metal (Brass / Stainless Steel) – High impact strength, chemical resistance, and EMI shielding