Description

Dowells Brass Cable Gland 38mm (1-1/2”) – Single/Double Compression

The Dowells Brass Cable Gland 38mm (1-1/2”) is designed for electrical cable-entry and termination applications where dependable mechanical retention, cable protection and an appropriate sealing arrangement are required. The product is available in Single Compression and Double Compression configurations, allowing contractors, panel builders, EPC companies, maintenance teams and industrial procurement departments to select the configuration according to cable construction and project requirements.

The 38mm designation is commonly identified with 1-1/2 inch, but customers should not select a gland solely from the nominal size. The actual cable outside diameter (OD), cable construction, enclosure entry, thread specification and required environmental protection should be checked before ordering. Cable dimensions can vary between manufacturers even when cables have the same conductor cross-section.

For more guidance, customers can read What Size Cable Gland Do I Need for My Project?, which explains why actual cable OD is one of the most important parameters when selecting a gland.

The product is particularly relevant for industrial electrical installations involving panels, junction boxes, control equipment, switchgear, machinery and other suitable cable-entry points. The correct gland configuration should always be matched to the cable type and manufacturer’s technical specifications.

Single Compression vs Double Compression

Dowells 38mm Single Compression Cable Gland

A Single Compression Cable Gland generally provides compression around the cable sheath to secure the cable and establish the required sealing arrangement. It is selected according to the cable construction, outside diameter, enclosure entry and installation requirements.

Single Compression should not automatically be treated as a replacement for Double Compression. The appropriate design depends on the cable and the requirements of the installation.

Dowells 38mm Double Compression Cable Gland

A Double Compression Cable Gland incorporates an additional compression arrangement and is commonly selected for suitable armoured cable installations where mechanical retention, armour termination and sealing of the cable assembly are required.

For armoured-cable applications, the gland selection should account for the cable’s overall diameter, bedding diameter and armour characteristics, rather than simply choosing a gland based on the nominal 38mm designation. Double-compression glands are commonly constructed with components such as an armour-clamping cone and ring to provide mechanical and electrical continuity through the armour termination.

Customers deciding between armoured and unarmoured applications can also read Armoured vs Unarmoured Cable Glands: Which One Do You Actually Need?.

Single Compression vs Double Compression Comparison

Single Compression – 38mm (1-1/2”)

Feature	Dowells 38mm Single Compression
Product Type	Single Compression Brass Cable Gland
Nominal Size	38mm
Inch Identification	1-1/2”
Main Function	Cable entry, retention and sealing
Compression	Around the cable sheath
Cable Selection	Based on actual cable OD and applicable gland range
Typical Consideration	Suitable cable-entry applications according to gland specification
Thread	Confirm required thread before ordering
Material	Brass — verify exact manufacturer specification
Installation	Follow applicable manufacturer installation instructions
Best Selection Method	Match cable OD, construction, thread and application

Double Compression – 38mm (1-1/2”)

Feature	Dowells 38mm Double Compression
Product Type	Double Compression Brass Cable Gland
Nominal Size	38mm
Inch Identification	1-1/2”
Main Function	Cable entry, sealing and mechanical retention
Compression	Additional compression arrangement
Cable Selection	Check overall OD, bedding diameter and armour requirements
Typical Consideration	Suitable armoured-cable applications according to gland specification
Armour Termination	Designed to accommodate armour-clamping arrangement where applicable
Thread	Confirm required thread before ordering
Material	Brass — verify exact manufacturer specification
Installation	Follow applicable manufacturer installation instructions
Best Selection Method	Match cable construction, dimensions, thread and application

Important: Exact cable ranges, thread types, material grades, sealing characteristics and performance ratings should be verified against the applicable Dowells product documentation before purchase. A nominal 38mm (1-1/2”) designation alone does not establish cable compatibility.

How to Select the Correct Dowells 38mm Cable Gland

Before purchasing, check these points:

1. Measure the cable OD: Measure the complete outside diameter at the point where the gland will grip the cable.
2. Identify cable construction: Determine whether the cable is armoured or unarmoured and identify the relevant sheath/bedding dimensions.
3. Choose the compression type: Select Single Compression or Double Compression according to the cable and installation requirement.
4. Confirm enclosure thread: Check the required thread standard and size before ordering.
5. Check environmental conditions: Indoor, outdoor, wet, dusty, corrosive and other environments may require different sealing arrangements.
6. Verify protection requirements: Where an IP rating is required, verify the rating of the complete correctly installed gland assembly rather than assuming it from the gland material alone.
7. Follow installation requirements: Correct assembly and tightening are important for achieving the intended mechanical and sealing performance.

For a broader selection framework, see Cable Gland Supplier India: 15 Expert Tips to Choose the Right Cable Gland for Industrial Projects – 2026 Guide.

You can also browse the Cable Gland category and related technical guides for additional information on sizing, selection, installation and applications.

Why Choose Thunderbolt Electromech India Pvt. Ltd. for Cable Gland?

Thunderbolt Electromech India Pvt. Ltd. is a Delhi-based supplier of industrial electrical products, including cable glands from established brands such as Dowells, HMI, Comet, Diamond and other suitable ranges. The company supports electrical contractors, EPC companies, panel builders, industrial buyers, OEMs and project procurement teams across India.

Customers can choose Thunderbolt Electromech for:

• Dowells Cable Gland availability
• Single Compression and Double Compression options
• Multiple cable gland sizes
• Brass cable gland solutions
• Industrial and project procurement support
• Assistance with cable-gland size selection
• Support for contractors, panel builders and EPC companies
• Bulk and project quantity requirements
• Pan-India supply
• Multiple industrial electrical products from one supplier

If you are uncertain whether the 38mm Single Compression or Double Compression version is appropriate, provide the cable type, cable OD, armour details, required thread and quantity to the Thunderbolt Electromech team. This allows the appropriate product specification to be checked before procurement.

For enquiries:
Phone: +91-9911886655
Email: info@thunderboltelectromech.com
Website: thunderboltelectromech.com

Frequently Asked Questions

1. What does 38mm (1-1/2”) mean on a Dowells Cable Gland?

38mm (1-1/2”) is the nominal gland size designation. It should not automatically be interpreted as the exact outside diameter of the cable that will fit. Cable OD and the manufacturer’s specified gland range should always be checked before ordering.

2. How do I know whether I need a 38mm Single Compression or Double Compression Cable Gland?

The choice depends primarily on cable construction and installation requirements. Single Compression generally compresses around the cable sheath, while Double Compression provides an additional compression arrangement and is commonly selected for suitable armoured-cable applications.

3. Is a 38mm cable gland suitable for a particular cable size in sq. mm?

Not necessarily. Cable conductor size alone is not sufficient to select a gland. Two cables with the same conductor cross-section can have different outside diameters because of differences in insulation, sheath and construction. Measure the actual cable OD and compare it with the manufacturer’s specified range.

4. What is the difference between Single Compression and Double Compression cable glands?

Single Compression primarily provides compression around the cable sheath. Double Compression incorporates an additional sealing/clamping arrangement and is commonly used with suitable armoured cables where armour termination, mechanical retention and sealing are required. The correct choice depends on the cable construction and application.

5. What thread should I select for a Dowells 38mm Cable Gland?

The required thread depends on the enclosure or equipment into which the gland is being installed. Do not assume that the nominal gland size determines the thread. Confirm the required thread standard and dimensions from the project specification and applicable Dowells documentation.

6. Can I use the 38mm Double Compression gland for an armoured cable?

A suitable Double Compression gland may be used for compatible armoured-cable applications, but compatibility must be checked using the cable’s overall diameter, bedding diameter, armour dimensions and the gland manufacturer’s specified ranges. Do not select it only because the gland is marked 38mm.

7. Does a brass cable gland provide waterproof protection?

A brass construction alone does not guarantee a particular IP rating. The sealing components, gland design, cable dimensions and correct installation all influence environmental protection. Where an IP rating is required, verify the manufacturer’s stated rating and installation requirements.

8. How should I choose the correct cable gland size?

Start with the actual cable outside diameter, then check cable construction, gland type, enclosure thread, environmental conditions and required protection level. Thunderbolt’s Cable Gland Supplier India: 15 Expert Tips to Choose the Right Cable Gland for Industrial Projects – 2026 Guide provides a detailed selection framework.