grease advice needed

Hey Guys, This afternoon I'm cleaning up a Sony GDM-1602 monitor. I have the case disassembled, and have washed all but the largest pieces. The base is a very nice rotating and tilting design. The rotation taken place because the plastic tilting assembly rides on a flat sheet metal base. The contact area is a circular plastic ridge that was lubed with an clear-ish amber grease. What kind of grease should I use to re-lube this? I want to provide adequate lubrication between the plastic and steel, but I don't want something that will hurt the plastic. I was thinking about using dielectric grease, since it shouldn't harm plastic, won't melt out, and isn't too messy. However, it's designed as a moisture barrier, not really as a lubricant, I believe. Thoughts anyone? Thanks, Chad Fernandez Michigan, USA