Abstract: The assembly releasably holds a hollow cylinder, or the like, from an overhead support in a stable condition, even during and after the hanging cylinder has expanded lengthwise. The preferred embodiment of the assembly includes: a first half-ring shaped member of sheet metal attached to the overhead support; a second half-ring shaped member of sheet metal disposed along, and in abutting contact with, the upper external surface of, the cylinder; a band clamp encircling and clamping the second half-ring member to the cylinder; and, a wire rope cable that is connected alternately, and recurringly, to the first and second half-ring members. The assembly is simple in structure, light in weight, and inexpensive to fabricate and to install.