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The closest tubing dimension that I can order, in the length that I need, is 2.0” OD with a 0.134 wall thickness.Both the OD and wall have a +/- .010 tolerance.If my calculations are correct, the worst case would be a 2.01 OD with a 0.124 wall. (+ on the OD, - on the wall)Turning the OD down to 1.85, would leave a .034 wall which seems too thin.
Option 2 would be a 2.0” OD with a .156 wall. Again, worst case would be a 2.01 OD with A .146 wall. (+ on the OD, - on the wall)Turning the OD down to 1.85 would result in a .056 wall. Better.
The second question is that this tubing is for the displacer piston. Is the wall thickness (within the .066 - .096 range) that critical?