The Victor is sealed in Max GFE A/B epoxy from Polymer Composites, Inc. It has a thermal conductivity of 0.682 W/mK, which is about the same as a thermal grease like Wakefield 120 (0.735 W/mK).
Here's the closest thing I can find to an online datasheet for this product:
http://cgi.cafr.ebay.ca/EPOXY-RESIN-...7 C240%3A1318
It also provides information on their recommended mixing and casting procedures.