Abstract: A conduit coupling assembly for joining together two metal conduits includes a first fitting having a first end opposite a second end, wherein the first end is threadably attached to the conduit, and a first washer attached to the second end of the first fitting, wherein the first washer is non-metallic. The coupling may further include a second fitting in abutment with the first washer, a nut surrounding the first fitting and the second fitting, and a second washer disposed between the nut and the second fitting, wherein the second washer is non-metallic.