Sefar filters are used in numerous electronic device applications such as transducers, speakers, audio devices, visual display screens, batteries, mobile phones and hearing aids.
The precision-woven fabric improves acoustic quality, reduces electromagnetic interference, reduces glare, keeps out debris and dust, functions as a moisture barrier and acts as a support and spacer screen.

Sefar filters are used as acoustic filters in microphones and speakers and also in many other shielding applications.