Can anyone provide a part number for the MT propeller prop flange seal O-ring or required size? I can't seem to find it on ACS site and don't have the MT manual handy. I want to have one on hand for my buddies Cozy MKIV IO-360 Superior engine when we replace the leaking crankshaft seal. I have a few extra on hand for my Hartzell if it uses the same one.. Thanks in advance.
