Cho-Mute Sheet


Comprised of a silicone elastomer matrix with ferrous filler material, these materials provide RF absorption performance over a broadband frequency range from 500MHz to 18GHz.

Applications include:​

  • GPS

  • Minimising cavity-to-cavity cross coupling

  • Hand held electronics

  • Wireless voice or data telecommunication

  • Military electronics

  • Reducing unwanted electromagnetic radiation

  • Ruggedized computers

  • Eliminating microwave cavity resonance

  • Night vision equipment

  • Telecommunication infrastructure equipment

  • Absorbing signals and reduction of reflections from metallic surfaces

Parker Chomerics Cho-Mute elastomer based absorber materials are designed to offer a user-friendly approach to the reduction of unwanted electromagnetic radiation from electronic equipment as well as minimise cavity to cavity cross coupling, and microwave cavity resonances.


Select the product name to access its datasheet.

Frequently Asked Questions

When would you typically use Cho-Mute materials?

Inside a cavity for dampening cavity resonance in near field interference/challenges.

What’s the difference between reflection loss and insertion loss?

Reflection loss (expressed in decibels, dB) is the ratio of reflected power to incident power. In simple terms, it means the reduction of a signal after it has attenuated through an absorber and reflected back via a reflective surface behind the absorber. Insertion loss, also known as transmission loss, is the reduction in power of a signal as measured after it has passed through an absorber having no reflective surface behind it.