These utility and boat trailer hub dust caps are press-in and protect bearing seals from road grime, dirt, dust, and moisture. Most dust caps are made of zinc plated steel for corrosion resistance. Internal rubber grommets provide additional protection.
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Tie Down Marine
Wheel Bearings and Accessories
Great idea - poor design.
Great idea - poor design. Center plug rests on internal grease fitting and wears/tears over time from friction and heat. Plug needs to clear the internal grease fitting by at least an 1/8" of an inch, 1/4" would be better. Make sure you have replacements plugs on hand. Also, the plugs are easily stolen.