A cable gland and methods for earthing, grounding, bonding, and electromagnetic capability with armored, metal-clad, and metallic-sheathed cable types. The cable gland comprises a gland body, a plurality of extensions, an elastomer seal, a compression member configured to rotate the plurality of extensions towards to the elastomer seal, and an earthing insert mounted in the gland body configured to electrically connect a cable to a neutral and/or grounded conductor. The cable gland is configured to provide an air-tight seal between the exterior of the cable and the elastomer seal through rotation of the plurality of extension upon the elastomer seal. The cable gland may include an o-ring and nut to secure the cable gland to a planar body. The earthing insert comprises a grounding spring in electrical communication with a metallic portion of the cable and a neutral and/or grounded conductor.