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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
-911 PTFE-90 N/A AS568 Standard O-Rings N/A PTFE N/A 0.116 in N/A 90 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-90 N/A AS568 Standard O-Rings N/A PTFE N/A 0.116 in N/A 90 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-90 N/A AS568 Standard O-Rings N/A PTFE N/A 0.116 in N/A 90 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-90 N/A AS568 Standard O-Rings N/A PTFE N/A 0.116 in N/A 90 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-90 N/A AS568 Standard O-Rings N/A PTFE N/A 0.116 in N/A 90 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-90 N/A AS568 Standard O-Rings N/A PTFE N/A 0.116 in N/A 90 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-90 N/A AS568 Standard O-Rings N/A PTFE N/A 0.118 in N/A 90 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-90 N/A AS568 Standard O-Rings N/A PTFE N/A 0.118 in N/A 90 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-90 N/A AS568 Standard O-Rings N/A PTFE N/A 0.118 in N/A 90 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-90 N/A AS568 Standard O-Rings N/A PTFE N/A 0.118 in N/A 90 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.
Unit of Measure
1 2 3