Differential Bearing seal
 

I'm having a serious problem with my mechanic. My Rodeo has been in the shop for 5 days and the mechanic keeps ordering seals but none of them have fit. Unfortunately, I can't provide any part#'s. Does this person know what they are doing? Is there something they are doing wrong? He said that they tore the old seal up trying to get it out and tore another seal up trying to make it fit.