Vibration isolation is a most generally utilized vibration assurance technique. The solidness of vibration isolators in existing customary sort of vibration confinement framework is more often than not of settled esteem. This report/paper focuses on development of procedure for calculating the stiffness of elastomers/rubbers in three mutually perpendicular directions. This report focuses on calculation of stiffness for the purpose of doing linear analysis of elastomers/rubbers rather than nonlinear analysis in FEA software’s, for this purpose Ansys workbench 2019 is used. The elastomers are modeled as linear material in Ansys workbench. The elastomers material which is used is nitrile rubber. The properties of rubber are modeled using ansys workbench. Nitrile is better than most elastomers as to pressure set or chilly stream, tear and scraped spot obstruction. Nitrile has brilliant protection from oil, gas, solvents, mineral and vegetable oils, pressure driven liquid, and powers. The stiffness results are calculated from formulas and compared with FEA results which are obtained from ansys workbench, Further the experimental analysis of elastomer geometry is performed to validate the results