Hiyas peoples...

Dad installed his 12v ammeter into the gauge face on the '53 3100 today:
image of the gauges for \'53 chevy 3100 - no glass

Now he is looking for something to use for a gasket between the housing and the gauge glass... and I was wondering about ways to clean up the face as much as possible before reassembly.

So, what suggestions and methods do you folks have?

-W