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Standard O-Rings are available in 369 sizes as set up by the Aerospace Standard 568 published by the Society of Automotive Engineers. These sizes are designated by dash numbers shown on the 568 DASH Chart and are standardized by imperial dimensions. Standard O-Rings are specified by their inside diameter and cross section width. AS568 is the most commonly used standard in the U.S. for aerospace, automotive and general industrial applications.For more information, please see: Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart.
AS568 Buna O-Rings
Unit of Measure
1 2 3 

Item #

IntegrationID

Type

Material

Cross Section Width

Durometer

Inside Diameter

Cross Section Tolerance +/-

Inside Diameter Tolerance +/-

Size Reference - AS568

Units of Measure

Tube Size O.D.

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O-Ring Industries

Quantity
-901 PTFE-70 N/A AS568 Standard O-Rings N/A PTFE N/A 0.056 in N/A 70 N/A 0.185 in N/A 0.003 in N/A 0.005 in N/A -901 N/A Imperial N/A 3/32 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-902 PTFE-70 N/A AS568 Standard O-Rings N/A PTFE N/A 0.064 in N/A 70 N/A 0.239 in N/A 0.003 in N/A 0.005 in N/A -902 N/A Imperial N/A 1/8 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-903 PTFE-70 N/A AS568 Standard O-Rings N/A PTFE N/A 0.064 in N/A 70 N/A 0.301 in N/A 0.003 in N/A 0.005 in N/A -903 N/A Imperial N/A 3/16 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-904 PTFE-70 N/A AS568 Standard O-Rings N/A PTFE N/A 0.072 in N/A 70 N/A 0.351 in N/A 0.003 in N/A 0.005 in N/A -904 N/A Imperial N/A 1/4 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-905 PTFE-70 N/A AS568 Standard O-Rings N/A PTFE N/A 0.072 in N/A 70 N/A 0.414 in N/A 0.003 in N/A 0.005 in N/A -905 N/A Imperial N/A 5/16 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-906 PTFE-70 N/A AS568 Standard O-Rings N/A PTFE N/A 0.078 in N/A 70 N/A 0.468 in N/A 0.003 in N/A 0.005 in N/A -906 N/A Imperial N/A 3/8 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-907 PTFE-70 N/A AS568 Standard O-Rings N/A PTFE N/A 0.082 in N/A 70 N/A 0.530 in N/A 0.003 in N/A 0.005 in N/A -907 N/A Imperial N/A 7/16 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-908 PTFE-70 N/A AS568 Standard O-Rings N/A PTFE N/A 0.087 in N/A 70 N/A 0.644 in N/A 0.003 in N/A 0.009 in N/A -908 N/A Imperial N/A 1/2 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-909 PTFE-70 N/A AS568 Standard O-Rings N/A PTFE N/A 0.097 in N/A 70 N/A 0.706 in N/A 0.003 in N/A 0.009 in N/A -909 N/A Imperial N/A 9/16 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-910 PTFE-70 N/A AS568 Standard O-Rings N/A PTFE N/A 0.097 in N/A 70 N/A 0.755 in N/A 0.003 in N/A 0.009 in N/A -910 N/A Imperial N/A 5/8 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-911 PTFE-70 N/A AS568 Standard O-Rings N/A PTFE N/A 0.116 in N/A 70 N/A 0.863 in N/A 0.004 in N/A 0.009 in N/A -911 N/A Imperial N/A 11/16 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-912 PTFE-70 N/A AS568 Standard O-Rings N/A PTFE N/A 0.116 in N/A 70 N/A 0.924 in N/A 0.004 in N/A 0.009 in N/A -912 N/A Imperial N/A 3/4 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-913 PTFE-70 N/A AS568 Standard O-Rings N/A PTFE N/A 0.116 in N/A 70 N/A 0.986 in N/A 0.004 in N/A 0.01 in N/A -913 N/A Imperial N/A 13/16 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-914 PTFE-70 N/A AS568 Standard O-Rings N/A PTFE N/A 0.116 in N/A 70 N/A 1.047 in N/A 0.004 in N/A 0.01 in N/A -914 N/A Imperial N/A 7/8 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-916 PTFE-70 N/A AS568 Standard O-Rings N/A PTFE N/A 0.116 in N/A 70 N/A 1.171 in N/A 0.004 in N/A 0.01 in N/A -916 N/A Imperial N/A 1 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-918 PTFE-70 N/A AS568 Standard O-Rings N/A PTFE N/A 0.116 in N/A 70 N/A 1.355 in N/A 0.004 in N/A 0.012 in N/A -918 N/A Imperial N/A 1-1/8 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-920 PTFE-70 N/A AS568 Standard O-Rings N/A PTFE N/A 0.118 in N/A 70 N/A 1.475 in N/A 0.004 in N/A 0.014 in N/A -920 N/A Imperial N/A 1-1/4 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-924 PTFE-70 N/A AS568 Standard O-Rings N/A PTFE N/A 0.118 in N/A 70 N/A 1.720 in N/A 0.004 in N/A 0.014 in N/A -924 N/A Imperial N/A 1-1/2 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-928 PTFE-70 N/A AS568 Standard O-Rings N/A PTFE N/A 0.118 in N/A 70 N/A 2.090 in N/A 0.004 in N/A 0.018 in N/A -928 N/A Imperial N/A 1-3/4 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-932 PTFE-70 N/A AS568 Standard O-Rings N/A PTFE N/A 0.118 in N/A 70 N/A 2.337 in N/A 0.004 in N/A 0.018 in N/A -932 N/A Imperial N/A 2 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-901 PTFE-75 N/A AS568 Standard O-Rings N/A PTFE N/A 0.056 in N/A 75 N/A 0.185 in N/A 0.003 in N/A 0.005 in N/A -901 N/A Imperial N/A 3/32 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-902 PTFE-75 N/A AS568 Standard O-Rings N/A PTFE N/A 0.064 in N/A 75 N/A 0.239 in N/A 0.003 in N/A 0.005 in N/A -902 N/A Imperial N/A 1/8 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-903 PTFE-75 N/A AS568 Standard O-Rings N/A PTFE N/A 0.064 in N/A 75 N/A 0.301 in N/A 0.003 in N/A 0.005 in N/A -903 N/A Imperial N/A 3/16 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-904 PTFE-75 N/A AS568 Standard O-Rings N/A PTFE N/A 0.072 in N/A 75 N/A 0.351 in N/A 0.003 in N/A 0.005 in N/A -904 N/A Imperial N/A 1/4 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-905 PTFE-75 N/A AS568 Standard O-Rings N/A PTFE N/A 0.072 in N/A 75 N/A 0.414 in N/A 0.003 in N/A 0.005 in N/A -905 N/A Imperial N/A 5/16 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
Unit of Measure
1 2 3