Cable glands may seem like a small part of an electrical installation, but their role is extremely important. They protect cable entry points, maintain sealing, ensure grounding, and keep environments safe from dust, moisture, vibrations, and mechanical strain. While two common materials used for cable glands are brass and plastic, brass cable glands are widely recommended and preferred in most industrial applications.

At Volt Metal Industries, we have been manufacturing and exporting brass cable glands since 1987. Over the years, we have seen that brass remains the material of choice in power plants, marine environments, automotive industries, construction projects, refineries, and heavy machinery setups. Let us understand the reasons behind this clear preference.

1. High Strength and Durability:

Brass has excellent mechanical strength. It can handle:

• Continuous temperature changes.
• Heavy vibrations.
• Exposure to chemicals.
• Physical impacts.

Unlike plastic glands, which can crack under load or become brittle over time, brass cable glands retain their structure and performance for many years. This results in longer service life and fewer replacements.

2. Better Heat Resistance:

Industrial and outdoor electrical installations experience heat due to:

• High current flow.
• Machinery operation.
• Environmental temperature.

Plastic cable glands soften or deform when exposed to heat. Brass, however, can withstand high temperatures without losing shape or performance. This makes brass cable glands ideal for high-load and high-temperature environments.

3. Excellent Corrosion Resistance:

Brass naturally resists corrosion and oxidation. When electroplated with nickel or chrome, its resistance increases further. This is especially important in:

• Coastal regions (salt air).
• Chemical plants.
• Marine vessels.
• Oil and gas installations.

Plastic can degrade under UV light and chemical exposure, reducing safety and lifespan.

4. Reliable Earth Continuity:

For armoured cable installations, maintaining proper earthing is essential. Brass cable glands allow secure electrical bonding between the cable armour and the equipment. Plastic glands cannot provide grounding. For this reason, plastic cable glands are not suitable for armoured cables or any application where earthing is required.

5. Secure Clamping and Thread Accuracy:

Brass cable glands are machined with high dimensional accuracy. This ensures:

• Tight sealing.
• Perfect thread matching (Metric, PG, NPT, BSP).
• Strong clamping without cable damage.

Plastic cable glands may deform during tightening and lose grip over time, which can lead to cable pull-out risks.

6. Cost-Effectiveness Over Time:

While plastic cable glands may seem cheaper initially, they often require:

• More frequent replacements.
• Higher maintenance efforts.
• Extra caution in high-stress environments.

Brass cable glands, once installed correctly, deliver worry-free performance for years. The total lifecycle cost is much lower.

Where Plastic Cable Glands Are Acceptable:

Plastic glands can be used in:

• Light-duty environments.
• Indoor wiring.
• Small electrical panels.
• Non-armoured cables.
• Low temperature and low vibration conditions.

Conclusion:

Brass cable glands provide superior safety, durability, environmental resistance, mechanical strength, and grounding capability. That is why industries worldwide depend on brass cable glands for critical electrical projects.

Volt Metal Industries manufactures a complete range of brass cable glands for armoured and unarmoured cables, suitable for various thread standards and industrial requirements.

FAQs:

Q1. Can brass cable glands be used outdoors?
Yes. Brass cable glands are ideal for outdoor and harsh environments due to their corrosion resistance and durability.

Q2. Are brass cable glands suitable for armoured cables?
Yes. Brass cable glands provide proper earthing and secure clamping, making them suitable for armoured cable installations.

Q3. Do brass cable glands need special maintenance?
No special maintenance is required. Just ensure correct installation and tightening.

Q4. Are brass cable glands more expensive than plastic glands?
The initial cost is slightly higher, but brass offers a much longer service life, making it more cost-effective.

If you require high-quality brass cable glands for exports or project supply, feel free to contact us.
Send your requirement to:

•  info@voltmetalind.com
•  www.voltmetalind.com
•  +91 9879332240 | +91 8000222233