Waiting on a seal kit. The pump has a recessed area, as if made for a seal, but the way the fitting is designed, it fits down into the recess. I'm leary of damaging the sealing surface but I'm sure there's no seal stuck there. I was very careful taking it apart as I always expect seals. There simply wasn't one there. Amazing that it wasn't leaking there. After thinking about it, I'm going to put both seals in as the washer I have fits perfectly into the recess. Thanks for the input.

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1983 380SL
1995 C280
1995 S500 coupe
1990 Mazda Miata
2004 Suzuki Hayabusa