AS568 Polyurethane 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.

Polyurethane is also known as urethane, cast urethan and millable urethane. Exceptional tensile strength. Abrasion and low temperature resistance. Typical applications include hydraulic seals, gaskets, diaphragms, hoses, and wheels for skate boards.

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	-001 U-70 AS568 Polyurethane O-Rings	-001 U-90 AS568 Polyurethane O-Rings	-002 U-70 AS568 Polyurethane O-Rings	-002 U-90 AS568 Polyurethane O-Rings	-003 U-70 AS568 Polyurethane O-Rings
Type	N/A
Material	N/A
Cross Section Width	N/A 0.040 in1.02 mm	N/A 0.040 in1.02 mm	N/A 0.050 in1.27 mm	N/A 0.050 in1.27 mm	N/A 0.060 in1.52 mm
Durometer	N/A 70	N/A 90	N/A 70	N/A 90	N/A 70
Inside Diameter	N/A 0.74 mm0.029 in	N/A 0.74 mm0.029 in	N/A 1.07 mm0.042 in	N/A 1.07 mm0.042 in	N/A 1.42 mm0.056 in
Cross Section Tolerance +/-	N/A 0.003 in0.08 mm
Inside Diameter Tolerance +/-	N/A 0.004 in0.10 mm
Size Reference - AS568	N/A -001	N/A -001	N/A -002	N/A -002	N/A -003
Alternate P/N	N/A
Units of Measure	N/A
Tube Size O.D.	N/A
Call for a Quote	N/A
O-Ring Industries	N/A O-rings are used in the military defense and agriculture industries.