Two-part silicone is electrically, thermally conductive

MASTER BOND MasterSil 973S-LO adhesive, sealant and coating passes NASA low outgassing tests. Well suited for use in vacuum environments, the electrically conductive, two component silicone can be used in the aerospace, electronic, opto-electronic and specialty OEM industries. Silver filled compound has a thermal conductivity of 9-11 BTU•in/ft²•hr•°F [1.30-1.59 W/(m•K)] and provides a low volume resistivity of 0.004 ohm-cm. Product bonds well to a wide variety of substrates, including metals, composites, glass, ceramics, rubbers as well as many types of plastics. http://www.masterbond.com