JZP-4.2 Chemical Resistant Rubber Vibration Isolator Mount — Lightweight Isolation for Harsh Environments What Makes the JZP-4.2 Different from Standard Rubber Mounts? Most off-the-shelf Rubber Vibration Isolator products degrade within months when exposed to oils, fuels, or industrial solvents. The JZP-4.2 Vibration Isolator Mount addresses this failure point at the material level. Its elastomer compound is formulated with acrylonitrile-butadiene (NBR) and select fluorocarbo