is replacing hub seals a big job?

You just need to take a small screwdriver, pry old seal out, replacing is just as simple. Looking at new seal will suggest how it is installed.

Jim-linda is correct, super easy. Any trailer place has replacements. I carry a couple spares. About a buck(or less) apiece.

Look at these pictures and it will remove all worries about difficulty.
ez lube seal

Super easy, Figure about 30 seconds total time per seal. Take a small screw driver and pop the old seal out. Push the new seal in with your thumb and it's done.

Easy but messy.

phillyg wrote:
Easy but messy.

At first I thought the OP was talking about the hub seals (hub to spindle). Also easy by messy.
In the event that that IS what the OP is talking about.
Remove wheel, remove bearing cap, remove castle nut, adjust brakes down if hanging up the drum, slide drum/hub assembly off, pry old seal out, clean out grease and re-pack bearings, tap new seal in, reverse order re-assemble, adjust brakes back up.

If the OP is talking about the little rubber plug on the bearing cap, that is not a question. It took longer to post the question than it takes to pop it out and replace it. and I can't imagine it being messy unless you put the old one with grease on it in your pocket!

it's the rubber outer seal...the plug...got some on order...thx for input