Abstract: An isolator for enclosing a flexible waveguide at an antinode point along s length to attenuate movement of the waveguide and prevent its reaching a resonant condition, the isolator comprising a thick band of metallic wool impregnated with a low-density rubber foam contained within an elastomer jacket and supported by a snugly fitting bracket around its outer circumference which is firmly attached to a relatively immobile foundation.It should be understood that the foregoing abstract of the disclosure is for the purpose of providing a non-legal brief statement to serve as a searching-scanning tool for scientists, engineers and researchers and is not intended to limit the scope of the invention as disclosed herein nor is it intended that it should be used in interpreting or in any way limiting the scope of fair meaning of the appended claims.