What lube or grease would be compatible with the Double Protect Ultra?
I'd like to lube the gaskets in my Ultitube, as I'm losing quite a lot of pressure there.
My positive pressure leak test indicated a reservoir cap issue. Which is fine as the original cap has a very good grip, but I was surprised how tight it had to be. It had to be tightened very manly. But the thing is hand tight on the Leakshield isn't going to cut it apparently and it has a poor grip too. I may need some trickery here.
What lube or grease would be compatible with the DP Ultra, as I need some extra sealing.
Thanks!

Don't do it. I almost stripped the plastic threads on the Leakshield as a result. "Hand tight" feels a lot different when things are lubed, plus I tried to make sure there's no air leak, so I did tighten it up hard on purpose.
When the seal is clean and dry, you can't really strip the threads by hands only. And the lube also didn't help with the air leak. Well, it sort of did to some extent, but didn't eliminate it completely.
Plus the grease would contaminate the coolant long term, even though I cleaned it up and it never touched the coolant. I guess the vapor condensation would wash it into the coolant eventually.

Zitat von »Jeff3F«

a tiny amount of silicone grease is essential to successfully reusing o-rings, but yes have to be careful with overtightening.

I had a recent leak situation with an old EK-RES 3X reservoir, and in the end I simply tried with a Torx style cap that was much easier to tighten in a controlled fashion and the leaky port cleared up (that reservoir is finicky and most of its ports are recessed making it tough.

I’m sorry it went hard for you but hopefully your build is okay now.

Yeah, it's okay. I've been running this loop for a year or two now. Not a single drop of leak or loss of fluid level in the reservoir. We can say it's watertight. It just isn't and never was airtight enough for the Leakshield to operate properly. Under negative pressure there is actually an air leak somewhere, it suck air in ever so slowly that finds its way into the reservoir in the form of bubbles. So now the Leakshield just serves as an expensive cap, with no pressure in the loop.
The only two things I never tightened up or investigated closely, are the cpu and gpu coolers. Everything else had been triple checked for leaks. The funny thing is, the leak tester pump didn't show show an error after 15 minutes of positive pressure. It's the negative pressure that gets it, and over the span of a day or so. Plus I had constant trouble with the membrane, as it gets soaked with moisture and stops breathing after a while, despite the fact it never directly touched the liquid.
So yeah, that's how it is for me. You could say things aren't perfect for me. And there's an awful pump or fan harmonic coming of the case most of the time, which isn't that loud, but it's such an annoying frequency that's perfectly audible through the headphones...
Sometimes I kinda wish I stayed on aircooling. For the kinda investment this loop cost me, it sure is a letdown.