Hey 67 suburban I believe most of these axles took the same seal. Someone correct me if i am wrong.
Go to Sears parts direct and type in the # 4910H and it will give you the info.
Still Available by the looks of it.
Or if you do a google search for the same # you will get some info as well.
This thread might help some too, I just did them on my '69 Sub. I bought mine from the local auto parts store for $7 each. If you go to the parts store use the SKF number, the sears site number didnt get any results in my experience. All the axle seals for the high/low trans are the same except the newer ones with splined hubs. I'd like to see a pic of your tractor. :fing32: