OEM Ref 1203258 - 391-0155 - 391-0155
 
Price per 1 seal.
 
Hub seal for Leyland Daf T244.      POA
 
Good to have a least one spare if overlanding.  A oil leak will get into your brake shoes and make your brake usless so better to change a leaking hub seal as soon as possible. 
 
You will also need a hub tool also to replace the hub seal.  Available on this website.