Hi all:
I purchased VAPR back in December and stupidly cut the tubing too short. Well, I wrote to SansMind in January and again in April, and they still didn't have the tubing available.
So, I went out looking for it, and I found it on Amazon.
White Translucent Medical Grade SiliconeTubing, 0.063" ID, 0.188" OD, 0.063" Wall, 10' Length
for $11.21.
Now, I doubt if anyone else here has trouble reading a ruler like I do, but if you did...and you're looking for tubing, this stuff works.