CHO-SEAL 1298 Material of choice for aircraft and marine military applications, high performance in harshest corrosive environments, best corrosion resistance. Fluorosilicone binder with corrosion inhibiting additives, excellent resistance to fluids and fuels, electrically stable, 90dB shielding effectiveness - 100MHz to 10GHz CHO-SEAL 1285 Conductive silicone elastomer, lighter in weight than other elastomers, recommended when system shielding specifications are up to 90dB at 1GHz. CHO-SEAL 1287 Silver plated aluminium filled blue fluorosilicone elastomer, provides more than 90dB of shielding effectiveness to 10 GHz. CHO-SEAL 1285/ 1287 - Military gasket of choice for corrosive environments, lightweight, 200°C max. use temp, good EMP resistance.