Water pump to block gasket identification

Hi

97 300TDI been noticing engine loosing coolant for few months without much driving. Been topping it up and have the level alarm.
Today had a good look around and noticed a moist gasket from the waterpump assembly to the engine block. Looked at the Diagrams on lrworkshop and cannot see any info on this part.
Anyone here can help with id of said gasket?

And how much is required to be removed for a diy replacement job? Any other gaskets to buy at same time?

Headgasket was done 5 years ago, waterpump 2 years and timing belt 1 year ago.

Thanks

Hah just read the sticky above re P gasket and thats clearly what it is. Did replace it when renewed waterpump. So maybe needs tightening or it was low quality gasket

How to delete this thread as not needed?