Its not the hub that needs stripping to change the seal its the swivil housing..... means taking half the axle apart.
Common to drain and bung in a one-shot sachet of graphite grease, but that only lubes the CV joint in the drive shaft, it doesn't properly lube the swivil pins that the axle steers on, and it can still leak out the dodgy seal, it just does so more slowly!
Bottom one is lubed by the oil that sits in teh swivil, upper one splash lubed from the 'spray' from the shaft.
Use one shot and the lower will get a bit of lube, but the upper wont see much at all.
Idea that it is 'one-shot' is a bit misleading..... you need to keep giving it one shot at regular intervals to ensure that the CV stays coated, but the lube on the swivil pins will be minimal, which means that you WILL have to strip the assembly down and do the job properly at some point in the not too distant future!
There IS however a better bodge to swap replace the swivil seal WITHOUT stripping the axle, if you are dexterouse enough.... by cutting up a new swivil seal and fitting it in sections.
The Swivil Seal Swizzle! Its good for a few extra miles, with EP90 in the joints and everything lubes as it should be.
But at some point you will have to bite the bullet and overhaul teh swivils. May be worth sorucing a second hand axle and overhauling it at your leaisure in anticipation, and doing an axle swap when the beam you have really needs it.