Hey gang, longtime reader 1st time poster. Best forum on my bookmarks...

I took apart my loop this week to perform what I thought would be routine maintenance. Unfortunately what I found was anything but routine.



This corrosion/rust whatever it is only occurs in the two fittings attached to the Thermochill PA 120.3 radiator by these MCMaster recuders ;



as you can see in the MCMaster reducer threads, there is some residue also but this appears to have come from the corroded fittings as I can clean it.

a brief compenent description ;

All 3/8 Koolance (nickel plated brass) compression fittings.
Koolance CPU block
Koolance gtx 280 block
Thermochill PA 120.3 rad (flushed over 15 times)
Coolant is Primochill PC Pure




Can you guys/gals please give me some feedback? Do you think it's just 1 bad set of fittings as these are the only ones showing a problem?

Perhaps I got a set of steel instead of Nickel plated brass?

Thanks in advance,

Breeze