Oil leak from cylinder base

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newguy

Grey Hound
Joined
Nov 8, 2006
Messages
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Location
Centurion
Bike
BMW R80GS
There is an oil leak at the base of my cylinder, from the base O-ring.
The O-ring has been replaced and it is still leaking (slightly less now). Surfaces look and feel clean.

I dont know what to do.
Standard seal thickness is 2.2mm, do you think I will be able to go a size up on the O-ring? What is the next size up?
Should I silicone it to death?
 
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