The main gear stick is sealed by the rubber boot over the top, I would think this would be a separate part for sure.
It could be the 4wd Hi/low gear linkage, this has a small seal in the gearbox housing where the operating shaft passes through and I would also think this would be available as a separate part, if it isn’t then a seal specialist such as bearing services may be able to get one for you, if you take the old one in as a pattern.