On my 85 300D.
I put in both rebuilt axles and new diff. side seals, it is leaking from the center, not the outer edge on the right side only, the left side is not leaking.
I have replaced the right side seal twice now with new ones, still leaking.
I am using Elring (OEM) seals part#: J7041-36486 (003 997
83 47 ELR).
The axle shaft seal surface measures 1.768 in..
The diff. is clean inside, no metal at all, like new.
Am I using the wrong seals, is there a left and right seal?

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1985 300D California w/cat. (257,000 + Miles)
1980 300SD (208,000 + Miles)