"New post on old thread"
I took the advise and bought a small sheet of felt from McMaster-Carr (12" x 12"), to use in my 1941 1 1/2 ton pinion axle seal. I read another post that suggested that the packing was unneccesary, but wanted to have it anyway. The thickness of the packing is 3/8" and the durometer read around 55, so I bought the 24S2 product. The part number is 8759K34. I cut it with an exacto knife and it popped right in snug. I'll post again if this fails to work like I think it will.
These tech tips are timeless. I don't post much, but I read a lot of them. Thanks for the help.