There is a good chance your old seal is marked "CR" for Chicago Rawhide, a leather seal with a tension spring. Very popular in days of old. Nate, you mean there is actually a bearing/seal that will keep an inboard disc brake Jag rear end from leaking oil. I thought they sold drip pans with new Jaguars.
Moving on Well took three tries and got the correct seal, the Green barring seal is twice the weight of the other, and from Ohio, could be USA made, not indicated on the box. You can clearly see the spring inside holding the rubber tight. Will work on that this week, The old Triumph bikes were known for leaking too,