Many tiny cracks around the fitting holes(XPX pro aurora)

111alan

New member
These two XPX pro aurora water blocks was running fine on my server for half a year. Then I upgraded to the server POM version so these got retired and left there for a month, without any fitting installed on it. A few days ago I checked on them to use them on other projects only to find out that some small cracks have formed around the fitting hole. I remember there were none when I took them out. The fittings I used also can't be overtightened since there aren't much force needed to go all the way in, and I used a torque screwdriver.

Are there any clues about why this happened? And could I ask for an RMA? Thanks.
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