[Closed] hot water cylinder replacement question

hi Guys

I hope someone can advice me on what I need to buy at the plumbers merchant/screwfix.

I am replacing the cylinder which is quite straightforward but need some advice on what to put on the connections

the old water feed had an flange adapter which had what looks like Hemp resin on the threads where it screwed into the tank and nothing on the threads where the copper pipe was connected.

What would you recommend I use for fitting the flange adapter and for the two hot water heating coil connectors? (the old hot water heating coil connectors didn't seem to have any washers or sealant is that right?.

There is a new Warwick flange going on the top which come with fiber washers.

cheers