Xj6 IIIseries 1982: rubber in valve of exaust

XJ
1

Changing the rubber of the valve; on the valve of exaust side do not seem to be there and in kit of riparation there are only six (eac 5032)
can someone help me?
carlo

2

Exhaust valves do not use oil seals. There needs to be some oil.

3

thanks you very much
carlo