No, I mean the ones sealing the actual ball bearings. It doesn't matter now, panic over. It seems that it is meant to be a sealed unit, however it kind of fell apart on me when I was fitting my longer wheel studs. We didn't realise it was meant to be sealed, so thought we could just get the two seals and put it back together :S
Will be picking up a new "sealed" unit this afternoon!
Cheers,
Tom