Camshaft cover gasket set.

Bought a cam cover gasket set for my E39 528 - single VANOS - and as well as the main gasket and seals that go round the plug recesses, there was a
seal like you get on the front of the crank etc but about 1 1/2 inch outside diameter. With nowhere obvious it would go. Although it looked about camshaft size. Any clues? Just for interest - my engine is now oil tight again.
*Frankly, scallop, I don't give a clam

Dave Plowman London SW
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