So I'm a new Oliver owner...and love my 1944 &quot;70&quot;
Today I decided to start changing the front wheel bearings (rough shape)
I guess I was expecting to see the typical lip/dust seal I see on everything else. Well, it didn't have any. I did get a service manual (copy) on the web and it talks about felt. 

Can someone help here? how, where, what?
where do I find it and how to install it

Many thanks