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Cable grommets. A cable grommet is a tube or ring through which an electrical cable passes. They are usually made of rubber or metal. [1]The grommet is usually inserted in holes in certain materials in order to protect, improve friction or seal cables passing through it, from a possible mechanical or chemical attack.
Cable glands are commonly defined as mechanical cable entry devices. [4] They are used throughout a number of industries in conjunction with cable and wiring used in electrical instrumentation and automation systems. Cable glands may be used on all types of electrical power, control, instrumentation, data and telecommunications cables.
Cable grommets. Holes in metal or another hard material will often have sharp edges. [6] Electrical wires, cord, rope, lacings, or other soft vulnerable material passing through the hole can become abraded or cut, or electrical insulation may break due to repeated flexing at the exit point of the casing of a junction box for example. [6]
For routing of standard cables and other electrical, pneumatic or hydraulic lines through machine, panel or enclosure walls, cable glands, self-sealing grommets or gland plates can be used to seal the cut-outs required for passing the cables through. This protects the inside of an enclosure or machine from dirt, dust or liquids.
A wire rope terminated with a ferrule (left) and a thimble (right) Picco pipe with nickel silver ferrule Non-circular ferrules holding bristles of a brush to its handle. A ferrule (a corruption of Latin viriola "small bracelet", under the influence of ferrum "iron") is any of a number of types of objects, generally used for fastening, joining, sealing, or reinforcement.
In mechanical engineering, a compression seal fitting, also known as a sealing gland, is intended to seal some type of element (probe, wire, conductor, pipe, tube, fiber-optic cable, etc.) when the element must pass through a pressure or environmental boundary. [1] A compression seal fitting may serve several purposes: