Bearings have went down hill some since they started making them in China. Some trailer parts places make a double lip seal,it just helps make a surer seal.You have to make sure that the area on the spline where the seal sets is smooth as glass. Load the bearing properly by spinning the wheel and tightening until the wheel starts to have a little resistance when you turn it.Then back off just enough to free it and get the spindle nut to line for the key.If you use bearing buddies when you grease cold stop before the indicator shows full.The grease will expand some on warmer days and can put to much pressure on your seal.If you can keep just a small amount of pressure on the bearing assembly it will help to keep the water out while its submerged. When the axle is a foot or more submerged there is a little water pressure trying to force water in.

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