Looking at Rockauto, the Timken is a Rubber lip seal and the National is a Felt seal. I thumbed through the Timken catalog also, doesn't seem to be any that are close to fitting.


http://www.rockauto.com/catalog/moreinfo.php?pk=1118581


1954 3600 Chevy Truck
"The Fake Truck"
In the Stovebolt Gallery
More pix on Photobucket