A Structural Isolator is a feature that limiting or reducing the transmission of structure borne vibration to and from machinery and/or other areas of the structure.

The form of a structural isolator can vary from resilient filled structural discontinuities in a superstructure, to relatively complex molded rubber or fabricated steel spring devices, which isolate their displacement under load. In all cases, Engineering Dynamics considers dynamic loading requirements and other design requirements associated with the operating environment and design life.