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.
Unit of Measure
Items
AS568 Buna O-Rings

AS568 PTFE O-Rings - 900 Series

AS568 Buna O-Rings

AS568 PTFE O-Rings - 900 Series

AS568 Buna O-Rings

AS568 PTFE O-Rings - 900 Series

AS568 Buna O-Rings

AS568 PTFE O-Rings - 900 Series

AS568 Buna O-Rings

AS568 PTFE O-Rings - 900 Series
Type N/A AS568 Standard O-Rings
Material
N/A PTFE
Cross Section Width
N/A 0.056 in N/A 0.064 in N/A 0.064 in N/A 0.072 in N/A 0.072 in
Durometer
N/A 70
Inside Diameter
N/A 0.185 in N/A 0.239 in N/A 0.301 in N/A 0.351 in N/A 0.414 in
Cross Section Tolerance +/- N/A 0.003 in
Inside Diameter Tolerance +/- N/A 0.005 in
Size Reference - AS568 N/A -901 N/A -902 N/A -903 N/A -904 N/A -905
Units of Measure N/A Imperial
Tube Size O.D. N/A 3/32 N/A 1/8 N/A 3/16 N/A 1/4 N/A 5/16
Call for a Quote N/A
O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries.