There are 3 different seals with 3 different widths for the Dana 60. My originals said National 34419 which I'm finding out was a Spicer part #.

473228 - 1.5000 x 2.5060 x 0.3125 (Double Lip)
481837 - 1.5000 x 2.5060 x 0.3750 (Single Lip) * Same width as my originals*
51098 - 1.5000 x 2.5060 x 0.4375 (Single Lip)

You don't know which ones you need until you pull out your original ones. That's what I'm finding out. I went thru this about 5 months ago.

https://board.moparts.org/ubbthreads/ubbt...tml#Post2374994