C-RAM: KFS

Magnetic Silicone Casting Resin for UHF Frequencies

PPG C-RAM® KFS is a casting silicone for radar absorbers and loads, primarily for UHF and lower microwave bands.

PPG C-RAM KFS is a two-part liquid RTV silicone casting resin system. When cured, it converts to a flexible high temperature silicone rubber.

PPG C-RAM KFS will adhere to itself and to most other silicones. It will release well from most other substrates unless an adhesion primer is used.

PPG C-RAM KFS is used to mold loads and intricately contoured parts used for attenuation of signals and suppression of standing waves and RF noise, or to provide a lossy RF gasket. Pre-molded sheets of KFS are available as PPG C-RAM FDSS.


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Service temperature
  • 400°F
Shelf life
  • 6 months