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ForNever

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Discussion starter · #1 ·
I got pretty sick of gambling with vinyl tubing in water loops, so I started experimenting with different types of tubing over the past couple of years. If anyone is interested, I have found a clear winner IMO, food grade high temperature silicone rubber tubing. Vinyl tubing will never see the light of day in one of my loops again! The only downside to the tubing I use is that it is semi opaque. Unlike vinyl, it just doesn't come in crystal clear, however, I think it looks extremely good with any colored coolant. I'll add some pics of my loop this evening if anyone is interested.

I order mine from a Chicago based company that has become my go-to for anything project related, McMaster-Carr, although I'm sure you can find the same stuff at other online retailers. The reason I stick with this tubing is pretty simple, it is cheap, extremely durable, has extremely good bend radius without collapsing, and NO PLASTISIZER. An added bonus for any extreme cooler is that it's a killer insulator, so condensation is of very little concern if running sub ambient.

Although propylene glycol, which many computer coolants use, isn't listed on the chemical compatibility sheet, ethylene glycol is listed, and it scores extremely well. I can attest to this fact, as I have been using high temp silicone rubber (soft and semi-soft) in my loop for about a year now with outstanding results.


Anyway, I hope this saves someone out there the headache of completely tearing down their loop to meticulously clean each component due to plastisizer. As I found out the hard way more than once, you just never really know when using vinyl.

link to what I use --> http://www.mcmaster.com/#standard-plastic-and-rubber-tubing/=sz8mtp

on the left click on "beverage", then "rubber", then "semi-clear"
 
Discussion starter · #4 ·
Quote:
Originally Posted by majormajormajor View Post

Yup. And available at any hardware store for $0.90 a foot.
Really, which hardware store are you frequenting that carries food grade high temp silicone rubber tubing exactly? Honestly, it would be great if that were true. Stinks waiting around for an internet order.

Good point, I hadn't considered the pH angle yet. You just get test kits from pet stores, or what?
 
Quote:
Originally Posted by ForNever View Post

Really, which hardware store are you frequenting that carries food grade high temp silicone rubber tubing exactly? Honestly, it would be great if that were true. Stinks waiting around for an internet order.

Good point, I hadn't considered the pH angle yet. You just get test kits from pet stores, or what?
There are too many types in semi-clear or clear, which one exactly are you referring to?

Edit: I think I got it.
 
I just got one of those paper stripe test kits from amazon for a couple of bucks. The package will probably last me another decade considering the insane amount of paper strips that fits inside a matchbox
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Earlier I had just plain distilled in my loop and things looked really ugly. Some of it settled on the waterline inside my res and the tubes were white-ish after a month or something.


For some reason our plain distilled ends up at PH of 5.5. Then I added mayhems XT-1 because whatever is in there, it raises the PH to something around 7 if you add enough of it. After that (and a thorough wash of my rad with industry grade sanitary cleaner) things seem to be fine.

Just don't try to use tweezers to hold one of those strips inside your res or you'll end up like this every once in a while

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Ace Hardware right down the street from my office. 3/8" ID 5/8" OD food & beverage grade silicone tubing. Also available in 1/2" I/D 3/4" OD. Sold by the foot. Saw it there the other day, thought it would be great for a water cooling loop.

Although in fairness, I take your point: I shouldn't have said any hardware store would have it based on a sample size of one. It's certainly possible that some hardware stores, especially those in disadvantaged communities, are not so well-provisioned
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While reserching a problem with my car,, I stumbled upon this dicussion on computer water cooling and plastisizers.in tubing.. Being a computer nerd myself I thought this might be pertinent .. What you may not have realized is there may also be plasticizers in your coolant liquid [ 2-ethylhexanoic acid (2-EHA ] ,, a plastisizer commonly found in some Glycol based coolants..It is used as an ANTI CORROSIVE agent.. In my research on auto antifreze and a prduct called DEX-COOL.. I found that as an anti corosive additive it can soften plastic intake gaskets in autos where the coolant can be exposed to them...This may also be a contributing facter to the gunky build up in custom computer cooling loops... I have learned that the exposuer to air can cause this product to drop out of solution and jell ,, causing a mess in my cars cooling system...Being that a lot of custom style liquid cooling loops are not closed this may be a factor .. Also It seems that when this product drops out of solution that it can become even corrosive [ eating away at matalic and plastics ]... This said it may be important to move the return connection to the resevoire so as not to let it drop through the air... This is a link to the article I found... http://www.sancarlosradiator.com/antifreeze_coolant.htm .... webtrol
 
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