Original parts from manufacturer, so accurately. Do not be surprised that there are no three rubber seals accompany more - the seals are now directly incorporated into the transparent silicone layer at the bottom. That can be a ceramic cartridge leaking at all, of course, is another issue - is obviously on the small size and the associated forces distributions. At least the small 35mm cartridge is the only one that has ever been leaking - more cartridges have this problem not obvious. So if you want to play it safe, the whole fitting should rather just trade for a model with wider body ...
