Cable glands are used to firmly secure electrical cable entering a piece of equipment. Cable glands provide seals which seal onto the outer electrical insulating sheath and the inner electrically insulating sheath between which the armoring is generally clamped to the gland. Electrical cable glands can be made to various different specifications such as, being simply waterproof, flame proof, or even explosion proof. There are numerous different designs of electrical cable glands on the market and which embody inner and outer seals. An armor clamp assembly is provided between the two seals to clamp the armor wires of an armored electrical cable. Cable gland design has to meet national and international standards which constrain the choice of a number of parameters. Cable glands are required to meet torque and seal grip performance standards, and to provide the necessary earthing performance. Cable glands are made of metal (such as brass or stainless steel) or nylon.
