Cable glands may look simple, but they perform critical mechanical, electrical, and environmental functions in industrial electrical systems. Understanding the cable gland parts name and function helps engineers select the right gland, install it correctly, and ensure long-term safety.
This technical guide explains the components of single compression and double compression cable glands, their working principles, and where each type is best used. The content is written for industrial engineers, panel builders, EPC contractors, and maintenance teams.
What is a Cable Gland?
A cable gland is a mechanical device that connects and secures the end of an electrical cable to equipment, panels, or enclosures. In simple terms, it works as a cable gland connector that not only holds the cable firmly in place but also seals the entry point against dust, dirt, and water.
Depending on the design, cable glands also provide strain relief, maintain the enclosure’s IP rating, and ensure that no external elements compromise the safety of the electrical system. For example, a watertight cable gland or waterproof cable gland is used in outdoor or marine installations where moisture protection is critical.
In industries such as oil & gas, telecom, renewable energy, and automation, the right gland can make a huge difference. Selecting the proper cable gland types whether nylon, stainless steel, or brass cable gland ensures long-term reliability and compliance with global standards.
Cable Gland Parts Name & Function (Basic Overview)
Both single compression and double compression cable glands are made of several precision components. Each part plays a specific mechanical or sealing role.
Below is the standard cable gland parts list used in ExGrip industrial cable glands.
Cable Gland Parts Diagram
Detailed Cable Gland Parts Name & Function
Gland Body
Function:
Main housing of the cable gland
Supports all internal components
Connects to enclosure or junction box
Common Materials:
Brass
Nickel-plated brass
Stainless steel
Dome Nut (Cap Nut)
Function:
Tightens over the cable
Compresses sealing components
Provides mechanical strain relief
Industrial Benefit:
Prevents cable loosening due to vibration
Sealing Ring (Outer Seal)
Function:
Seals around the outer sheath of the cable
Prevents dust and water ingress
Used In:
Single compression cable glands
Double compression cable glands
Clamping Ring
Function:
Applies uniform pressure to the sealing ring
Ensures firm grip without damaging the cable
Armour Cone
Function:
Clamps the steel wire or strip armour
Provides strong mechanical anchoring
Maintains electrical earthing continuity
Critical For:
Armoured cables
High-vibration industrial areas
Inner Seal (Double Compression Only)
Function:
Seals the inner bedding or insulation
Creates the second compression point
Why It Is Important:
Prevents gas and moisture ingress
Required for hazardous environments
Locknut
Function:
Secures the gland body to the enclosure
Prevents loosening over time
Single Compression Cable Gland – Parts & Working
How It Works
Single compression cable glands seal only the outer sheath of the cable.
Key Features
One sealing point
Simple construction
Economical solution
Typical Applications
Control panels
Indoor switchgear
Electrical cabinets
Double Compression Cable Gland – Parts & Working
How It Works
Double compression cable glands seal:
Inner bedding (inner seal)
Outer sheath (outer seal)
They also secure the cable armour firmly.
Key Features
Two sealing points
High ingress protection
Maximum safety
Typical Applications
Oil & gas installations
Chemical plants
Outdoor and hazardous areas
Single vs Double Compression Cable Gland (Comparison Table)
| Feature | Single Compression | Double Compression |
|---|---|---|
| Sealing Points | One | Two |
| Armour Clamping | Basic | Strong |
| Environmental Protection | Moderate | High |
| Hazardous Area Use | Not suitable | Suitable |
| Cost | Lower | Higher |
| Safety Level | Standard | Maximum |
Cable Gland Accessories
Common cable gland accessories include:
Locknuts
Earth tags
Reducers
Enlargers
PVC shrouds
Sealing washers
Accessories improve grounding, sealing, and installation flexibility.
Conclusion & Call-to-Action
Understanding the cable gland parts name and function is essential for safe and reliable electrical installations. Whether using single compression or double compression cable glands, each component plays a critical role.
ExGrip cable glands are engineered with precision parts, ensuring durability, safety, and compliance with industrial standards.
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FAQs
What are the main parts of a cable gland?
Gland body, dome nut, sealing ring, clamping ring, armour cone, inner seal (DC), and locknut.
Which part grips the cable armour?
The armour cone.
Is inner seal present in single compression glands?
No, inner seal is only used in double compression cable glands.
Why is double compression safer?
It seals both inner and outer layers, preventing gas or moisture ingress.
What material is best for industrial cable glands?
Nickel-plated brass or stainless steel.
Do cable glands provide earthing?
Yes, through the armour cone and gland body.
Can one gland fit different cable sizes?
Each gland has a defined cable diameter range.
Are accessories mandatory?
Not mandatory, but recommended for grounding and sealing.
