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Paul, BLB King and Ridea hubs all seem to have a bit of shielding built in to the design. Miche do too but I'm not a fan of their axle system and the hardware they use seems particularly prone to corrosion so wouldn't recommend them.
I don't think it would be in the same league of bling as Phil, Goldtec etc but a converted Shimano XT disc front hub + iso cog would fulfil the bombproof bit of your brief and the hub seals are pretty good so the service intervals could easily be as long if not longer longer than the lifespan of a cartridge bearing. Couple penny's worth of grease to do the service not £5-10 for new cartridge bearings too.
@mdcc_tester has a converted Hope front hub I believe, bearing shielding on Hope stuff is pretty good being that its designed for the rigours of mtbing. .
I wouldn’t recommend either Phil or Goldtec given this brief.
The Goldtec hubs seemed to have a habit of shedding their flanges a couples years ago, got put down to exposure to salt as I remember.
Phils have the bearings very exposed so you’re relying on the shield on the bearing to repel water/salt etc.
I know a lot of hubs are of similar design but there’s also a lot that hide the bearings away or provide some additional shielding and if youre specifying weather resistance and have a Phil Wood type budget it would seem to me you could get something better.