The cam caps need to have sealant there. Because there is oil present on the inside but it is a very narrow area and its also a bearing surface on the inside where assembly lube is used. So if too much lube is there or the person who assembled it didn’t properly clean and add very little sealant to the surface I could see it ooze out. Most of us use either threebond or ultra grey. Perhaps the builder used a high temp red sealant. If it wipes away like oil/grease that might be a cause for concern. If its dry like sealant you’re probably fine. Check the fsm for the cam cap assembly procedure so you see what I mean.