is it desirable to have thick walls? mcmaster-carr carries silicone tubing in 3 different thicknesses for a given diameter tube. For 1/2" ID, you can get 1/16", 3/32", or 1/8" walls, for a maximun OD of 3/4"!!! It seems like that would be dreadfully hard to work with. What's wrong w/ the 1/16" thick stuff?
Also, the tubing comes in two hardnesses, 50A and 70A. Which best suits our needs?
(I want to use 1/2" throughout. My rad. will have 5/8" OD fittings, most likely.)
Here's the link... http://www.mcmaster.com/catalog/108/html/0096.html
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