DSE Engine Oil Cooler pipes

I've swapped the engine in the RR and I have a query about the oil cooler pipes - I assume they should have o-rings where they seat in the bottom of the oil filter housing, but I can't see them on any of the exploded diagrams.

Should they be there and, if so, what is the part number (or just the correct size)?

Thanks in advance.

Don't worry! Found it!!!