Cable glands provide a means of routing cables through enclosures while providing a seal to keep out water, dust, and other contaminants. The gland also allows adjustments in the tension of the cable to prevent movement and fatigue.
When selecting a cable gland, there are many factors to consider:
Cable type (armored or unarmoured)
Termination type (thread or non-thread)
The type of environment the equipment will be used in (harsh or general purpose)
In this article, we highlight several common cable gland types to guide you in choosing the right product for your application.
Different (material) types
Cable glands are available in multiple types and out of multiple materials. But when do you choose which material type?
The following six cable gland types will be highlighted in this blog:
Nylon-reinforced cable glands
Nylon split cable glands
Brass cable glands
Brass EMC cable glands
Stainless steel cable glands
Nylon cable glands
Nylon cable glands
Nylon cable glands, also known as cable connectors, are devices used to secure and protect electrical or data cables as they pass through enclosures or panels.
Nylon cable glands are made from Nylon, a durable and lightweight synthetic polymer known for its excellent resistance to corrosion, chemicals, and UV radiation. Nylon cable glands typically consist of a threaded body for attachment to an enclosure or panel, a jam nut to hold the gland in place, a sealing ring or washer to create a tight seal around the cable, and a Clamping mechanism to clamp the cable and prevent it from being pulled out.
Some common features and benefits of nylon cable glands include cable protection, ease of installation, versatility, cost-effectiveness, and durable. It is a versatile, cost-effective, and durable solution for securing and protecting cables in a variety of applications.
They are commonly used in industrial, commercial, and residential environments to ensure that cables are properly installed and sealed to prevent dust, dirt, moisture, and other contaminants from entering the enclosure and to maintain the integrity of electrical or data connections.
Nylon-reinforced cable gland
Nylon-reinforced cable glands, also known as strain relief cable glands, are designed to provide extra strength and protection to cables in applications where there may be a strain or pull on the cables. They are typically used where the cable is subjected to pulling, twisting, or bending forces that could damage the cable or affect its performance.
Nylon-reinforced cable glands typically have a standard nylon body and threads for attachment to an enclosure or panel, similar to regular nylon cable glands. However, they also have an additional strengthening element, such as a metal or plastic insert, that is incorporated into the design to provide additional support for the cable.
Nylon-reinforced cable glands offer similar benefits to conventional nylon cable glands such as cable protection, ease of installation, versatility, cost-effectiveness, and durability. However, they are specifically designed to handle higher levels of strain or tension on the cable, making them ideal for applications where the cable is exposed to mechanical stress or movement, such as robotics, automation, machinery, or heavy industrial environments.
Nylon split cable glands
Nylon split cable glands, also known as two-piece conduit glands, are designed to provide a sealed entry point for cables that are already pre-wired or terminated. They are typically used to disconnect or re-terminate cables for applications where installation is not feasible or practical.
Nylon split cable glands are designed as a two-piece construction consisting of a main body and a two-piece seal or gland insert. The body typically has threads for connection to an enclosure or panel, while the gland insert is designed to accommodate pre-wired or terminated cables. The gland insert is split, allowing it to be opened and closed around the cable, and then held in place with a lock nut or other fastening mechanism.
Nylon split cable glands offer similar benefits to conventional nylon cable glands, such as cable protection, ease of installation, versatility, cost-effectiveness, and durability. They are usually made of high-quality nylon material that is resistant to corrosion, chemicals, and UV radiation and is suitable for a wide variety of cable types and diameters.
Brass Cable Glands
A brass cable gland is a cable gland made of brass, a metal alloy consisting of copper and zinc. Brass is known for its excellent corrosion resistance, mechanical strength and electrical conductivity, making brass cable glands ideal for a wide range of applications.
Brass cable glands typically have a threaded body that attaches to an enclosure or panel, and a gland nut that secures the gland to the cable, providing a securely sealed entry point for the cable. They may also have other features, such as sealing rings or gaskets to ensure a water- or dust-tight seal, and grounding tabs for electrical grounding.
In addition to durability and versatility, brass cable glands are known for their excellent electrical conductivity, making them suitable for applications requiring electrical grounding or bonding. They are also widely used in hazardous areas or explosive environments because brass itself does not spark and helps prevent the ignition of flammable gases or vapors.
Brass EMC Cable Glands
Brass EMC (Electromagnetic Compatibility) cable glands are a special type of cable gland designed to provide effective electromagnetic shielding for cables. They are typically used in applications where electromagnetic interference (EMI) or radio frequency interference (RFI) could affect the performance or integrity of sensitive electronic or electrical equipment.
The main feature of brass EMC cable glands is their ability to provide effective electromagnetic shielding. They are designed with specialized sealing materials, such as EMC inserts or gaskets, made of conductive materials such as brass or nickel, which help block or divert electromagnetic interference from entering or exiting the enclosure or panel through the cable entry point.
This helps maintain the electromagnetic compatibility of equipment and prevents EMI or RFI from damaging sensitive electronic circuits or communication systems.
Brass EMC cable glands are commonly used in industries such as aerospace, defense, telecommunications, electronics, and medical where electromagnetic compatibility is critical to the reliable operation of equipment.
Stainless Steel Cable Glands
Stainless steel cable gland is a cable gland made of stainless steel, a corrosion-resistant and durable alloy widely used in various industries and harsh environments. Stainless steel cable glands are designed to provide a securely sealed entry point for electrical cables while providing excellent resistance to corrosion, chemicals, moisture, and extreme temperatures.
Stainless steel cable glands are known for their durability and longevity, making them suitable for demanding applications where cables need to be protected in harsh environments. They can withstand aggressive chemicals, salt water, high temperatures, and other challenging conditions without compromising performance, making them ideal for industries such as marine, oil and gas, food and beverage, and chemical processing.
Selecting the correct type of cable gland is critical to ensuring proper cable management and protection in a variety of applications. When selecting a cable gland, factors such as cable type, environmental conditions, the required degree of protection, and installation requirements should be considered.