gaskets & newbie questions??

[bbgun24]

I have a OMC 1990 4.3 L 4 bbl carb. Im trying to find a oil pump driveshaft gasket where the driveshaft goes into the intake. I cant seem to find one. Any one know where I could find this oil pumd driveshaft gasket?? I looked on several websites and did not see anything.

Thanks,

Brett