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bobkoure · 08-11-2004, 09:17 PM

I use soft (ns-51) silicone "thick wall" tubing from mcmaster - both 1/2" ID and 3/8" ID, depending on the system.
It does allow a bit of water to evaporate through (never enough that there's any kind of "sweat" detectable on the outside of the tubing - evaporation is on the order of a tablespoon a month).
It's very flexible stuff - good to use as the runs to/from your pump if you're trying to isolate pump vibration. The thin wall version is even more flexible, but has a tendency to kink if bent more than ninety degrees.
I have been using this kind of tubing for a few years now. One system (using the 3/8" ID) has been running 24x7 for more than three years now. The last time I looked at it, the tubing looked new and was as flexible as ever.

08-11-2004, 09:17 PM	#19
bobkoure Cooling Savant Join Date: Feb 2003 Location: USA - Boston area Posts: 798	I use soft (ns-51) silicone "thick wall" tubing from mcmaster - both 1/2" ID and 3/8" ID, depending on the system. It does allow a bit of water to evaporate through (never enough that there's any kind of "sweat" detectable on the outside of the tubing - evaporation is on the order of a tablespoon a month). It's very flexible stuff - good to use as the runs to/from your pump if you're trying to isolate pump vibration. The thin wall version is even more flexible, but has a tendency to kink if bent more than ninety degrees. I have been using this kind of tubing for a few years now. One system (using the 3/8" ID) has been running 24x7 for more than three years now. The last time I looked at it, the tubing looked new and was as flexible as ever.