I have tried reseating several times and cleaning the enclosure with petrol. I have also tried using different filter.
Old filter was Bosch 1 457 431 705. The first replacement was Valeo 587 907 and the second replacement was Purflux C493E.
I thought that Purflux would be the right one since they are the producer of the enclosure.
But after filling the fuel filter with the priming bulb and letting it sit over night it started leaking like this :
Have anyone encountered something this?