• AS568 Buna O-Rings
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.

This elastomer possesses mechanical properties similar to Viton®, with the exception of its slightly lower compression set resistance. It is more suitable for sensitive applications where lighter compressive forces are applied to energize the seal. This core has a Shore A hardness of 70 but it also offers a broader operating temperature range of -80°F to +500°F. (-62°C to +260°C).
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Cross Section Width (in)

Cross Section Width (mm)

Cross Section Width (mm)

Inside Diameter (mm)

Inside Diameter (in)

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IntegrationID

Type

Material

Cross Section Width

Durometer

Inside Diameter

Cross Section Tolerance +/-

Inside Diameter Tolerance +/-

Size Reference - AS568

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O-Ring Industries

N/A AS568 Standard O-Rings N/A Silicone N/A 0.116 in0.116 mm N/A 90 N/A 0.924 in N/A 0.004 inNumeric N/A 0.009 inNumeric mm N/A -912 N/A N/A Imperial N/A 3/4 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A AS568 Standard O-Rings N/A Silicone N/A 0.116 in0.116 mm N/A 90 N/A 0.986 in N/A 0.004 inNumeric N/A 0.01 inNumeric mm N/A -913 N/A N/A Imperial N/A 13/16 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A AS568 Standard O-Rings N/A Silicone N/A 0.116 in0.116 mm N/A 90 N/A 1.047 in N/A 0.004 inNumeric N/A 0.01 inNumeric mm N/A -914 N/A N/A Imperial N/A 7/8 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A AS568 Standard O-Rings N/A Silicone N/A 0.116 in0.116 mm N/A 90 N/A 1.171 in N/A 0.004 inNumeric N/A 0.01 inNumeric mm N/A -916 N/A N/A Imperial N/A 1 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A AS568 Standard O-Rings N/A Silicone N/A 0.116 in0.116 mm N/A 90 N/A 1.355 in N/A 0.004 inNumeric N/A 0.012 inNumeric mm N/A -918 N/A N/A Imperial N/A 1-1/8 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A AS568 Standard O-Rings N/A Silicone N/A 0.118 in0.118 mm N/A 90 N/A 1.475 in N/A 0.004 inNumeric N/A 0.014 inNumeric mm N/A -920 N/A N/A Imperial N/A 1-1/4 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A AS568 Standard O-Rings N/A Silicone N/A 0.118 in0.118 mm N/A 90 N/A 1.720 in N/A 0.004 inNumeric N/A 0.014 inNumeric mm N/A -924 N/A N/A Imperial N/A 1-1/2 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A AS568 Standard O-Rings N/A Silicone N/A 0.118 in0.118 mm N/A 90 N/A 2.090 in N/A 0.004 inNumeric N/A 0.018 inNumeric mm N/A -928 N/A N/A Imperial N/A 1-3/4 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A AS568 Standard O-Rings N/A Silicone N/A 0.118 in0.118 mm N/A 90 N/A 2.337 in N/A 0.004 inNumeric N/A 0.018 inNumeric mm N/A -932 N/A N/A Imperial N/A 2 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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