Wrong diff drain gaskets

Had real diff axle seal replaced and had shop change front and rear diff fluid. I supplied fluid and gaskets (in bag was gaskets for oil drain, rear and front diff etc) anyway I noticed they put transfer case drain gaskets on rear drain and fill plugs. Is this any concern? I back a boat in the water frequently In summer so water contamination is a concern. Thanks for any advice

 

All those 24 mm drain/fill plugs have the same gaskets

 

Nah its fine. They are interchangeable no issue.

Ideally you want the crush style on the diffs and the solid aluminum on the tcase, but it will 100% seal and you have no issues.

 

Check this out if you're worried about water in the rear axle