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FastDashTM

AS568 O-ring Design Utility

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Fast DashTM AS568 O-ring Utility

To get the dimensions of an AS-568A o-ring enter the 3-digit dash number and then press submit to get your "Fast DashTM" answer.

Dash No.   

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 DashTM" answer.

Cross-Section (inches): .070 .103 .139 .210 .275

Actual ID 
Actual OD  

For Metric (mm) - click here

Fast DashTM O-ring Application Design Guide

Use our free design tables for AS-568A standard industrial reciprocating and static o-ring applications. Select the type of application you are designing for to view the corresponding design guidelines:

AS-568A Dash Numbers and Cross-section Table

O-RING SIZE
AS-568
Dash Numbers
Cross Section
Nominal
inches
Cross Section
Actual
in. (mm)

Tolerance
+/- in. (mm)
-004 thru -050 1/16 .070 (1.78) .003 (.076)
-102 thru -178 3/32 .103 (2.62) .003 (.076)
-201 thru -284 1/8 .139 (3.53) .004 (.102)
-309 thru -395 3/16 .210 (5.33) .005 (.127)
-425 thru -475 1/4 .275 (6.99) .006 (.152)

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