Types of Cable Glands Complete Guide for Industrial Applications
                     Types of Cable Glands: Complete Guide 
for Industrial Applications
Cable glands may appear small, but they play a crucial role in ensuring 
the safety, stability, and efficiency of electrical systems. They are 
responsible for securing cables, maintaining sealing integrity, and 
providing proper grounding.
This guide explains different types of cable glands, their applications, 
materials, and classifications to help you select the right option for your 
needs.
What Are Cable Glands
Cable glands are mechanical components used to attach and secure 
cables to electrical equipment. They provide strain relief, prevent dust 
and moisture entry, and maintain the integrity of the enclosure.
They are widely used in:
Industrial systems 
Commercial buildings 
Outdoor installations 
Hazardous environments 
A properly selected cable gland ensures both safety and long-term 
performance.
Types of Cable Glands Based on Cable Structure
Armoured Cable Glands
These glands are used with cables that have a protective metallic layer 
such as steel wire or aluminum.
They offer:
Strong mechanical protection 
Reliable grounding connection 
Resistance to physical damage 
Common applications include heavy industries, mining, and railways.
Unarmoured Cable Glands
Unarmoured cable glands are designed for cables without metallic 
protection.
They provide:
Basic sealing and strain relief 
Lightweight installation 
Cost-effective solutions 
These are typically used in indoor and low-risk environments.
Types of Cable Glands Based on Material
Metal Cable Glands
Metal glands are made from materials such as brass or stainless steel.
They are known for:
High strength and durability 
Resistance to corrosion and temperature 
Suitability for industrial applications 
These glands are commonly used in demanding environments.
Plastic Cable Glands
Plastic cable glands are made from materials like nylon or polyamide.
They offer:
Corrosion resistance 
Non-conductive properties 
Lightweight design 
They are suitable for indoor and light-duty applications.
Types of Cable Glands Based on Thread Standards
Different thread types are used depending on regional and equipment 
requirements.
Metric threads are widely used globally 
PG threads are based on older European standards 
NPT threads are commonly used in North America 
BSP threads are used in the UK and many Asian countries 
Choosing the correct thread ensures compatibility with equipment.
Special Application Cable Glands
EMC Cable Glands
These glands are used to protect sensitive equipment from 
electromagnetic interference.
They help maintain signal integrity and are widely used in control 
panels and communication systems.
Marine Cable Glands
Marine glands are designed for environments with high moisture 
or water exposure.
They provide:
Strong waterproof sealing 
Resistance to corrosion 
Reliable performance in marine conditions 
Electrical Cable Glands
These glands are designed to provide proper grounding and 
strain relief in electrical systems.
They are commonly used in:
Switchgear 
Electrical panels 
Power distribution systems 
Fire-Resistant Cable Glands
Fire-resistant glands are built to withstand extreme temperatures 
and prevent the spread of flames.
They are used in:
Tunnels and railways 
Defense systems 
High-risk industrial areas 
Cable Gland Classification Based on Standards
Cable glands are also categorized based on industry standards such as BS 6121. These 
classifications define their design, sealing method, and application.
Different types provide varying levels of:
Sealing protection 
Mechanical strength 
Electrical bonding 
Understanding these classifications helps in selecting the correct gland for specific requirements.
Why Choosing the Right Cable Gland Matters
Selecting the correct cable gland is essential for ensuring:
Proper sealing against dust and moisture 
Strong cable retention 
Electrical safety and grounding 
Long-term reliability 
Using the wrong type can lead to equipment failure, safety risks, and increased maintenance 
costs.
Conclusion
Cable glands are a small but vital component in any electrical system. Choosing the right type 
based on cable structure, material, and application ensures safety and durability.
Understanding the different types helps improve installation quality and system performance.
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Frequently Asked Questions
What are cable glands used for?
They are used to secure cables, provide sealing, and ensure safe connections in electrical systems.
What is the difference between armoured and unarmoured cable glands?
Armoured glands are used for cables with metallic protection, while unarmoured glands are used 
for simpler cable structures.
Which material is best for cable glands?
Metal glands are ideal for industrial use, while plastic glands are suitable for lighter applications.
What are EMC cable glands used for?
They protect equipment from electromagnetic interference.
Where are marine cable glands used?
They are used in environments exposed to water and moisture, such as ships and ports.
Why is choosing the right cable gland important?
It ensures safety, proper sealing, and long-term system reliability.