Engine rocker cover gasket?1.4 petrol

[Thmspolo2009]

I have an oil leak from the rocker cover ( i think it’s called that) I had removed it in the past to replace the tappers and when removed there was no gasket there, I can’t find any for sale online, so I used sealant to join it but it has no started leaking oil, does anyone know of anyone making gaskets for that 2009 1.4 petrol 80 hp