Figure 1 5 illustrates the application of fl uid pressure on the o ring.
O ring gauge chart.
The standard sizes used by o ring manufacturers in the united states are defined by aerospace standard as568b aerospace size standard for o rings.
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That document published by the society of automotive engineers sae lists the sizes of o rings in six series or groups in both inches and millimeters.
Metric and inch cross section thickness reference gauge.
Quick reference tape measure confirms metric size o rings 64mm 665mm inside diameter on one side and usa as568 standard o ring sizes from 2 5 id to 26 inside diameter on the other side.
Find as568 o ring standard sizes by cross section inside diameter and outside diameter in our o ring size chart and separate o ring tolerance chart.
Note that the o ring has been.
Record the thickness of the ring the cross section see image for reference.
O ring is mechanically squeezed out of round between the outer and inner members to close the fl uid passage.
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The seal material under mechanical pressure extrudes into the microfi ne grooves of the gland.