Electron Particle Accelerators increase the kinetic energy of charged particles by subjecting the electrons to a radio frequency (RF) source that oscillates the electric potential along the inside surface of the beam-line or accelerator ring. The Atlas RF-CF gasket provides a vacuum knife-edge seal and an RF flare seal to bridge the gap between flanges conducting radio-frequency inside the tube.

Accelerators typically use resonant RF cavities formed from or coated with superconducting materials. Electromagnetic fields are excited in the cavity by coupling an RF source with an antenna. When the RF frequency fed by the antenna is the same as that of a cavity mode, the resonant fields build to high amplitudes. Charged particles passing through apertures in the cavity are then accelerated by the electric fields and deflected by the magnetic fields. The resonant frequency driven in SRF cavities typically ranges from 200 MHz to 3 GHz, depending on the particle species to be accelerated.

For connecting multiple resonant cavities the CF-RFF gasket can be used to maintain the radio signal through the complete cavity assembly.