[ROVERNET - UK] Differential seal

[LANCE G LACERTE, LANCE G LA CERTE]

Does anyone have, or can direct me to, part # 593744, the extension shaft 
seal on the differential. It is the one at the end of the extension shaft 
which sits in front of the circlip and bearing.  What fun to have to remove 
the differential all over again to put in a new seal!!!!

Any help would be appreciated.

Lance La Certe  '70  P6B  3500S