C-RAM: LPJ

Flexible Jaumann Radar Absorbers

PPG C-RAM® LPJ is a series of lightweight, flexible, weatherproof radar absorbing material which can be used indoors, outdoors or wherever the material may be in contact with water, oil or other liquids.

  • PPG C-RAM LPJ is made of alternating layers of closed-cell polyethylene foam and resistive layers. It is based on the Jaumann principle of operation.
  • PPG C-RAM LPJ is designed to provide typically 18 dB of reflection reduction in a frequency range dependant on grade.

Standard sheets are 24 in. x 24 in. (610 mm x 610 mm). PPG C-RAM® LPJ is available in three standard grades depending upon the lowest desired frequency of operation. PPG C-RAM LPJ can be supplied in other sizes or per customer specified configurations upon request.


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Service temperature
  • 180°F
Shelf life
  • 5 yrs. Minimum Or 1 yr. if supplied with adhesive backing