Rubber materials are commonly used as insulators in a variety of applications. This is critical to both the protection of the components themselves and the operators or personnel handling the end product. The material needs to have high resistance as well as the appropriate durability characteristics to be used in the operating environment.
Resistivity and conductivity testing—also referred to as dielectric strength, volume resistivity, and surface resistance—can also indirectly measure characteristics such as moisture content, degree of cure, or material deterioration. 

Our expertise 

The experts at the Smithers rubber and plastic testing labs have years of experience with industry standards for heat aging testing and designing custom protocols to meet your needs. Our experienced sample prep technicians can excise samples from production samples and most whole products to simplify the process for our clients.

Common standards for electrical properties

  • ASTM D149— Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies
  • ASTM D257— Standard Test Methods for DC Resistance or Conductance of Insulating Materials
  • ASTM D991— Standard Test Method for Rubber Property—Volume Resistivity Of Electrically Conductive and Antistatic Products
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