Preferred Hub Seal Type?

We are new to the flat bed trailer world & are getting this trailer ready for the road that we recently purchased at the Ritchie Auction & are replacing some brakes & the hub seals as part of the safety. We are learning a bit more about this process & have been made aware of different types of hub seals, Stemco Voyageur & a 2 part metal Stemco seal assembly, (perhaps there are more too?) of which the metal style is the one shown in the picture that we are using this time around. We were...

Preferred Hub Seal Type?

Preferred Hub Seal Type?