P38 Oil Cooler Pipes

Hi all
Have got a bad Oil leak. (P38 2.5 DSE 1996) and looks like its comming from the 2x Oil cooler pipes where they connect to the engine block..
By looks of it i have two pipes that are held in place by 1 clamp that is bolted on with (from memory) 1x 13mm Bolt to the block..
Have been LR and they ordered me 5No O-Rings...Around 1" round but very thin...
Before i unbolt them and the bracket Friday, can anyone please advise if these sound right? Dont look man enougth to me,was guessing on more of a gasket or something..

Have had a look on Rave, and it describes the 2 O-Rings Radiator end,,,but no mention of engine end..

Cheers in advance

LTel

definately O rings have recently fitted engine to mine had to replace mine only difference is i had boxes of O rings and found the best fit

Cheers Ian
Appreciate your help..

Dont suppose if you can remember off hand, if it is just the 1 bolt/bracket holding both pipes to the block?
Cheers mate

LTel