Three Key Words in Hydraulic Hose Sizing: I.D., Dash Size ...
2017-8-17 · Sizing is the most basic and essential factor in hydraulic hose selection. Sizing specifications for hydraulic hose include inner diameter, outer diameter, and length. Outer diameter (O.D.) measures the entire span of the hose cross-section, including the tube, reinforcement, and cover. The difference between the O.D. and I.D. is the thickness of the hose wall.
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