Anyone use these axle repair bearings?

I was looking for axle seals on rock auto and came across these. Never seen them before and im curious how they work. Looks like there is a seal on either side of the bearing.
More Information for WJB WBRP6408
My dart has a leaking axle seal and the seals were replaced around 4k miles ago. So its getting new seals again and I figured I would do bearings too. I ordered a pair of these bearings to check them out. If I dont use them I have some NOS mopar axle bearings on hand.