Help rear seal part number

I can't find the seal number for the housing fix. This seal is larger OD, same ID. I have the housing off & ready for the machine work. Thanks for any help.

Here is a list from ATIS, I'm not positive which seal you are asking about: http://www.antique-tractor.com/CubFAQ/cub_faq.html#q7

Bob

I found the seal number chicago rawhide 29952. I bet maybe some of you guys can relate to some age causing CRS.