Quote Originally Posted by ranker View Post
Hey Gabe,

Would you happen to know the permeation rate of the more popular brands of Tygon or have a link handy?
As I mentionned above, this data is not published by manufacturers, and you need direct access to factory engineers to get it.

According to the data we have gathered here, PVC formulations (without liners) are at an average WVTR of 5~6 times that of Norprene which is given for 0.83 g mil/100in^2 day, and silicon formulations (without liners) are up to 20x.