Spiral Flexible Metal Cable Glands Stainless Steel 316L/316/304, M25, M27, M28, M30 Metric Threads (Ø13-18mm), for Cable Protection from Sharp Bending

1. What are spiral flexible stainless steel cable glands?

The Spiral flexible stainless steel cable glands, designed with a helical flexible protective spring, are specialized cord connectors designed to provide cable fastening, environmental sealing and additional mechanical protection against excessive bending.

They feature a flexible spiral-shaped protective spring, usually made of stainless steel, at the cable outlet. This spring-like structure helps guide and support the cable, reducing sharp bends, excessive mechanical stress, and potential damage to the cable sheath or internal conductors.

They are particularly useful for cables that experience frequent movement, vibration, or bending during operation.

Unlike conventional dome top cable glands, the spiral design provides additional bend protection while maintaining cable retention and sealing performance.

2. Main materials and construction

Typical spiral flexible stainless steel cable glands consist of the following components:

3. Main features and advantages

1. Excellent anti-bending protection

The stainless steel spiral spring supports the cable at its entry point, helping prevent sharp bending, kinking, and damage to internal conductors.

2. Strong bend relief

The internal clamping mechanism firmly grips the cable, reducing pulling forces and preventing accidental cable loosening.

3. Waterproof and dustproof protection

With suitable sealing rings and correct installation, these cable glands can achieve IP68 protection, helping prevent water and dust from entering electrical enclosures.

4. Excellent mechanical strength and corrosion resistance

Stainless steel construction provides good resistance to mechanical stress, rust, and corrosion. Performance depends on the stainless steel grade and working environment.

5. Suitable for flexible and moving cables

The spiral section helps protect cables exposed to repeated movement, vibration, and bending during equipment operation.

6. Easy installation and versatile connections

Available in different thread standards, including Metric, PG, and NPT, with different cable clamping ranges to accommodate various electrical installations.

4. Where are they mainly used?

These products are particularly suitable for industrial environments where cables need additional bending protection and mechanical reliability.

1. Industrial machinery and automation

Used on machine housings, motors, control cabinets, CNC equipment, and automated production lines. They protect cables exposed to vibration and repeated movement.

2. Robotics and mechanical equipment

Installed at cable entry points of robotic systems, moving machinery, and portable equipment to reduce excessive bending and cable fatigue.

3. Marine and shipbuilding industry

Used in ship electrical systems, engine rooms, marine control panels, and other installations exposed to moisture, vibration, and salt-containing environments. Select an appropriate stainless steel grade for the actual exposure.

4. Chemical and petrochemical industry

Used in electrical enclosures, instrumentation, pumps, and process equipment where mechanical durability and chemical compatibility are important.

5. Steel, glass, cement, and foundry industries

Used in equipment operating under high mechanical stress, including furnaces, production machinery, and industrial control systems.

6. Construction and outdoor equipment

Applied to construction machinery, portable electrical equipment, and outdoor control systems that require durable cable connections.

7. Food and pharmaceutical manufacturing

Potentially used on processing machinery and electrical enclosures where corrosion resistance and easy cleaning are important. Hygienic applications require specifically designed and certified fittings.

5. Summary

Spiral flexible stainless steel cable glands are high-performance cable entry fittings that combine cable fastening, cable sealing, and flexible anti-bending protection.

They are an ideal choice when ordinary cable glands cannot provide sufficient cable bending protection. Their stainless steel spiral structure helps extend cable service life, reduce cable damage, and improve the reliability and safety of electrical connections in demanding working environments.