Vacuum Pump Install Question

I'm planning to install a new vacuum pump on my 08 9-3 this weekend. I've found a DIY thread/video and don't think it should be too big of a project, but did have one question. Do I need to lubricate the gasket for the pump when installing it, and if so, what should I use and should it be complete lubed or just one side?

Thanks.

Thought I'd post a follow-up. Response was to use very thin coat of vaseline. Pump removal/install went well; no more leaks.