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).
Unit of Measure
Items
AS568 Buna O-Rings

AS568 Silicone O-Rings

AS568 Buna O-Rings

AS568 Silicone O-Rings

AS568 Buna O-Rings

AS568 Silicone O-Rings

AS568 Buna O-Rings

AS568 Silicone O-Rings

AS568 Buna O-Rings

AS568 Silicone O-Rings
Type N/A Long Text
Material
N/A Long Text
Cross Section Width
N/A 0.040 in1.02 mmNumeric mm N/A 0.050 in1.27 mmNumeric mm N/A 0.060 in1.52 mmNumeric mm N/A 0.070 in1.78 mmNumeric mm N/A 0.070 in1.78 mmNumeric mm
Durometer
N/A 70
Inside Diameter
N/A 0.74 mm0.029 in N/A 1.07 mm0.042 in N/A 1.42 mm0.056 in N/A 1.78 mm0.070 in N/A 2.57 mm0.101 in
Cross Section Tolerance +/- N/A 0.003 in0.08 mmNumeric
Inside Diameter Tolerance +/- N/A 0.004 in0.10 mmNumeric mm N/A 0.004 in0.10 mmNumeric mm N/A 0.004 in0.10 mmNumeric mm N/A 0.005 in0.12 mmNumeric mm N/A 0.005 in0.12 mmNumeric mm
Size Reference - AS568 N/A -001 N/A -002 N/A -003 N/A -004 N/A -005
Alternate P/N N/A 001S70 N/A 002S70 N/A 003S70 N/A 004S70 N/A 005S70
Units of Measure N/A Long Text
Tube Size O.D. N/A Numeric
Call for a Quote N/A
O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries.