Conductive rubber compounds use suitable additives to achieve specified electrical properties. Carbon black, graphite and other conductive fillers can affect resistance, but the finished result depends on formulation, loading and dispersion.
Supplier data for a filler is not the same as a resistance specification for the finished grommet. Mechanical properties, cure behavior and processing conditions must also be considered.
Define whether the application requires electrical insulation, static dissipation or conductivity. Specify the measurement method and conditions for the selected compound and part. Follow validated mixing and cure procedures; uncontrolled heating is not an appropriate processing recommendation. Confirm electrical performance after manufacture and under relevant service conditions rather than assigning a universal resistivity to a filler type.
