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OD stands for Outside Diameter

ID stands for Inside Diameter


The other dimension that is sometimes given is the wall thickness.


Example: 3/8” OD X 1/4"ID X 1/16” Wall

Title: I am looking at tubing, what do OD and ID refer to?
Description: How tubing size is specified
Published: 9/27/2011
Last Edited: 9/18/2013
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