The CoolZorb™ 500 from Laird Performance Materials is a Microwave Absorber with Attenuation 22.4 to 34.2 dB/cm, Thickness 0.02 to 0.2 Inches, Thickness (mm) 1 to 5.1 mm, Volume Resistivity 80 TOhms, Operating Temperature -40 to 175 Degree C. Tags: EMI Absorber, Hybrid Absorber. More details for CoolZorb™ 500 can be seen below.