I don't recognise your new seal. My new one was like your old one.I have the parts I ordered, but the top panel to caps seal has me wondering.
New one is a britpart seal and is quite different from the original, it looks like it has to be fitted on edge with the lip facing down to seat on the capping.
Anyone used these seals.
View attachment 213469
New one on left and original on the right
Would put the new one in the other way up, I.e. the lip sitting on the capping.