Dexter to Timken Bearing part number crossover - the hard way - solution

[Yoda]

Yoda Keith, note I did opt for the 2 piece oil seal vs the single or double lip seal. The 2 piece is a little harder to seat on the axle shaft, but I prefer the rubber outer and inner over molding as it's a touch more forgiving and the fact that the seal comes with it's own wear surface.
.

Two piece seal??????????????????? Never heard of that option. I don't think any of the seal part numbers I listed are two piece. They are double lipped though. So you have me confused?
Keith

[Jlawles2]

this is a 2 piece seal:


This is a double lip:


On the 2 piece (I believe ford like GM uses them on the rear hubs on their trucks), the double lip seal rides on a liner that is integral to the seal. The liner and outer seal are rubber over molded. In the second image C and E (this is the interface to the stub axle) are the 2 lips of the double seal and ride on the axle stub shaft. Over time the stub shaft can develop a groove. In the first image Lips C and E are shown to ride on the U shaped section at the bottom (this is the inner diameter of the seal) which is stationary to the stub axle. Yes it's probably overkill on a trailer axle, but the 2 piece design also renews the seal riding surface every time the seal is changed, so if there are any pits or corrosion on the stub shaft it's much less critical.

I know clear as a glass of solidified soil.