The cable gland is a suitable power source for connecting cables and can also protect cables, so it will not escape. Cable sealing devices are placed in different categories, depending on whether the glands are used in general processing industries or require protection to prevent the risk of high temperatures or explosions. The cable armor or no armor layer integrated into the gland and a different type of gland will require various varieties. The gland itself can be made of metals such as copper, aluminum, or plastic, which are useful in different environments.

After electrical work is completed, it may not have cable sealing to ensure the wiring of electrical equipment, but there are several reasons why this is a bad idea. The gland provides sealing power to ensure that the cable does not slip during operation. Safety is also provided, as the glands ensure that electrical energy does not attach to cables near anyone, causing personal injury. Glands usually provide other safety functions, such as grounding wires or insulated cables