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Seals Eastern O-ring Application Design Guidelines

"Fast Dash"Metric
To get the dimensions of an AS-568A o-ring in millimeters (mm) submit the dash number. To get a dash number based on dimensions select the cross-section and either the actual ID, or the actual OD. Then press submit to get your "Fast Dash" answer.

Dash No.    For English Standard - click here
Cross-Section: (mm)
1.78 mm 2.62 mm 3.53 mm 5.33 mm 6.99 mm
Actual ID 
Actual OD 

 
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AS-568A Dash Numbers and Cross-section Table

O-RING SIZE
AS-568
Dash Numbers

Cross Section
Actual

Tolerance +/-
-004 thru -050 1.78 mm .076 mm
-102 thru -178 2.62 mm .076 mm
-201 thru -284 3.53 mm .102 mm
-309 thru -395 5.33 mm .127 mm
-425 thru -475 6.99 mm .152 mm

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