Once you have these measurements you then need to decide if the size you need is listed below or if the best fit will be a metric oring.
O ring cross section chart.
Manufacturers of encapsulated o rings and industrial gaskets.
Because they can be expensive to machine o ring grooves should only be added when necessary or for metric o rings with a cross section larger than 3 53mm.
Until now o ring standards have left a gap between the 1 8 and 3 16 nominal cross sections.
The diagram shows exactly where these dimensions are to be found.
All you need to do is measure the internal diameter id or outside diameter od and the width or cross section c s of the o ring.
Nominal cross section o rings.
As568 o ring size chart.
The global o ring and seal size reference chart covers the as568 o ring sizes published by the society of automotive engineers s a e and includes the extended sizes in the 400 series dimensional tolerances for all as568 o rings offered by global o ring and seal are in accordance with iso 3601 1a the purpose of this chart is to specify the inside diameters cross.
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.
Our groove design chart is a useful aid for selecting the right metric o ring groove dimensions for your design.
O ring cross section and o ring groove design data from row inc.