Polyurethane foam microwave and radar absorbers
Featured Product from Engineered Materials, a subsidiary of PPG's aerospace division

Foam Absorbers
Cuming Microwave manufactures a family of flexible, carbon loaded, polyurethane foam microwave and radar absorbers. These are all electrically resistive materials which attenuate RF energy through ohmic loss. These carbon-based microwave absorbers such as C-RAM MT have high dielectric loss over a very broad frequency range, and are available in a range of loadings and thicknesses to be optimized for particular frequencies. Many grades are available with a peel-and-stick adhesive for ease of application. Carbon loaded microwave absorbers can also be ordered diecut or waterjet to your drawing.
Some of the materials, such as C-RAM LF and AR, have impedance gradients and are designed to absorb free-space planar waves. They are often used to cover metal structures in the path of RF energy to eliminate unwanted reflections. These materials can be weather-wrapped or sprayed with a protective coating for outdoor applications.
Cuming Microwave Products
Designed and engineered in the USA, our products deliver exceptional performance and reliability in absorbing and controlling microwave energy. Whether it's reducing reflections, minimizing interference, or creating anechoic environments, Cuming Microwave's solutions provide superior results.
Explore our range of products for your application; custom formulations and configurations available, including advanced development capabilities for cutting-edge performance.